Sterling Trucks Automobile UMP45 User Manual

Operators Manual  
UMP45 (.45 ACP)  
UMP40 (.40 S&W)  
In a world of compromise, some dont.  
HK UMP  
Submachine Gun  
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CAUTION: Read the safety rules before handling the  
UMP Submachine Gun!  
UMP  
Universal Submachine Gun  
Operators Manual  
.45 ACP  
.40 S&W  
© Heckler & Koch, Inc., 10/1999, Revised August 2000  
All rights reserved  
HK, Inc., 21480 Pacific Blvd.  
Sterling, Virginia 20166-8903  
United States of America  
Telephone (703) 450-1900 • Fax (703) 450-8160  
Specifications and models subject to change without notice.  
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TABLE OF CONTENTS  
Safety Rules on the Use of the HK UMP Submachine Gun ................6  
General ................................................................................................8  
Assembly Groups................................................................................10  
Description of Assembly Groups ........................................................11  
Assembly Group 1 Upper Receiver with barrel, folding buttstock  
and attachment components ............................11  
Assembly Group 2 Bolt Group ..........................................................12  
Assembly Group 3 Lower Receiver with trigger mechanism ............14  
Assembly Group 4 Magazine ............................................................16  
Accessories ........................................................................................17  
Carrying Sling......................................................................................17  
Cleaning Kit ........................................................................................17  
Special-purpose Accessories ..............................................................17  
Sound Suppressor ..............................................................................17  
Mounting Rails for Aiming Devices according to MIL-STD-1913........17  
Handstop ............................................................................................17  
Magazine Loader ..............................................................................18  
Handling and Operation ....................................................................18  
Filling the Magazine ..........................................................................18  
Filling the Magazine using the Magazine Loader ..............................18  
Emptying the Magazine ......................................................................19  
Insertion and Removal of the Magazine ............................................19  
Loading the Submachine Gun ..........................................................20  
Forward Assist ....................................................................................22  
Storage of the Weapon ......................................................................23  
Disassembly of the UMP ....................................................................24  
Safety Check ......................................................................................24  
Disassembly into Assembly Groups ..................................................24  
Disassembly and Assembly of the Bolt Group....................................26  
Disassembly and Assembly of the Magazine ....................................27  
Reassembly of the UMP ....................................................................28  
Function Check ..................................................................................29  
Operator Cleaning ..............................................................................30  
Normal Cleaning ..............................................................................31  
4
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TABLE OF CONTENTS  
Major Cleaning ..................................................................................33  
Operator Inspection ............................................................................34  
Lubrication ..........................................................................................34  
Special Use and Maintenance of HK Sound Suppressed Weapons ..35  
UMP with Quick Connect Sound Suppressor ....................................36  
Ammunition ........................................................................................38  
Stoppages ..........................................................................................38  
Troubleshooting Guide ......................................................................39  
Carrying Sling ....................................................................................41  
Carrying Modes ..................................................................................43  
Firing Positions ..................................................................................44  
Sight Alignment for the UMP ..............................................................45  
Specifications ......................................................................................47  
Exploded Diagram and Parts List ......................................................48  
Weapon Service Record ....................................................................50  
5
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UMP SAFETY RULES  
Safety Rules on the use of the HK UMP Submachine Gun  
Clear the weapon! Before handling the weapon, “clear it!” Do so  
by:  
Make sure fingers are outside of the trigger guard and the  
weapon is pointed in a safe direction at all times!  
ON SAFE – Rotate the safety/selector lever to the “Safe”  
position. (With the safety/selector lever set at the white box  
with a white bullet symbol inside. See illustrations on page 12).  
REMOVE MAGAZINE – Depress the magazine release lever and  
remove the magazine from the magazine well.  
COCKING LEVER – Rotate the ejection port towards the ground  
and pull the cocking lever rearward one or more times to insure  
the chamber is empty. Watch for a live round or empty case to  
be ejected. Rotate the cocking lever upward slightly and lock it  
into the indent in the cocking lever housing to lock the bolt  
open.  
INSPECT CHAMBER – Inspect chamber for the presence of a  
live round or empty case.  
Visually – View chamber through open ejection port.  
Physically – Insert index finger through magazine well or  
ejection port and feel for the presence of a round or cartridge  
case in the chamber.  
Remove any live rounds or empty cases from the chamber or  
from within the weapon or magazine before handling the  
weapon further.  
The HK UMP submachine gun is now considered “Clear”.  
WARNINGS  
When handling submachine guns special caution is necessary  
as the position and direction of the submachine gun can be  
changed easily.  
Carefully read this operators manual before handling the  
submachine gun.  
Only use the submachine gun after you have fully reviewed and  
understand these instructions.  
Observe all notes on handling and operation. Failure to do so  
may result in injury or death of the operator or bystanders.  
Do not use the submachine gun if you have previously ingested  
alcohol, drugs or medication.  
When passing the submachine gun between persons, the  
weapon must be clear and the bolt should be open.  
Always treat the submachine gun as if it were loaded and ready  
6
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UMP SAFETY RULES  
to fire.  
Never point the submachine gun at anyone during handling.  
Always point the submachine gun in a safe direction.  
Before handling and before cleaning it has to be checked to  
ensure that:  
- The bolt is locked to the rear  
- The submachine gun is unloaded (cartridge chamber empty)  
- The barrel is free of obstructions  
- The magazine is empty.  
Keep your finger off the trigger when loading, unloading or  
otherwise handling the submachine gun. Always place the  
trigger finger outside of the trigger guard.  
Place your finger on the trigger only when your sights are  
aimed at the target.  
Never use force when handling, disassembling, cleaning and  
assembling the submachine gun.  
Disassemble the submachine gun only as far as described in  
this manual.  
A handstop is provided with each UMP to keep the nonfiring  
hand or fingers away from the muzzle of the weapon. This  
handstop should be used at all times and can be mounted on  
the weapon with or without the mounting rails attached.  
Always wear eye protection when using the submachine gun.  
Always wear hearing protection when using the submachine  
gun.  
Take into account the fact that bystanders are also endangered.  
Ensure bystanders are also wearing ear and eye protection.  
Only use factory-loaded and undamaged cartridges of the  
correct caliber.  
Always mind that the muzzle area is free of obstacles during  
firing.  
Store the weapon and ammunition in separate places.  
Heckler & Koch does not assume liability for events due to  
disregarding this manual, improper handling, negligence,  
improper treatment, unauthorized exchange of parts or  
manipulations of the submachine gun.  
Read this operators manual and be familiar with the safe  
handling of this weapon before using it. Keep this manual with  
the submachine gun.  
7
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UMP SUBMACHINE GUN  
General  
The UMP Submachine Gun is a select-fire small arm manufactured  
according to the latest standards of manufacturing methods. The upper  
receiver, lower receiver, magazine, and folding buttstock are made of  
high strength polymer. The UMP allows single fire, limited bursts, or fully  
automatic fire to be fired from all positions. The UMP is a simple  
blowback operated weapon with fixed barrel.  
The UMP offers maximum safety and accuracy as it fires from the  
closed bolt position.The UMP is easily disassembled into its main  
assembly groups for cleaning and care without the use of tools.  
Accessories  
The following accessories are available:  
• sound suppressor  
• mounting rails for aiming devices  
• magazine loader  
• handstop  
• multi-purpose carrying sling  
• tactical lights  
Other accessories may also be available, please contact HK for more  
information.  
Fig. 1 UMP with buttstock open, left side view  
8
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GENERAL  
Fig. 2 UMP with buttstock open, right side view  
Fig. 3 UMP with buttstock folded, right side view  
Fig. 4 UMP with carrying sling, left side view  
9
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UMP SUBMACHINE GUN  
Assembly Groups  
1
Upper receiver with barrel, folding buttstock and  
attachment components  
2
3
Bolt Group with recoil spring assembly, complete  
Lower receiver with trigger mechanism, backplate and  
magazine well  
4
Magazine  
For accessories see pages 15-16  
Fig. 5 UMP Assembly Groups (4)  
10  
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DESCRIPTION OF ASSEMBLY GROUPS  
Assembly Group 1  
Upper receiver with barrel, folding buttstock attachment  
components  
The upper receiver is produced using fiber-reinforced plastics and  
houses other subassemblies. The inside of the upper receiver contains  
metal guideways for the bolt group as well as attachment points for the  
lower receiver with magazine well and backplate.  
The barrel is inserted into and pinned to the upper receiver. The cocking  
lever of the weapon is located above the barrel. It also serves to  
manually lock the bolt in its open position. The right side of the upper  
receiver contains the ejection port. The ejection port includes an integral  
catch for engage-ment of the buttstock in its folded position.  
The bottom part of the upper receiver includes the support bolts for the  
lower receiver. The left side of the upper receiver includes eyebolts for  
attachment of the carrying sling.  
The sights are fastened to the top of the upper receiver. They consist of  
a flip-up type rear sight with diopter (peep) and u-notch apertures as  
well as of the front sight post with front sight hood. The rear of the upper  
receiver includes the hinge for the folding buttstock.  
Fig. 6 Upper Receiver with barrel, folding buttstock and attachment  
components  
1 Upper receiver  
2 Barrel  
5 Flip-up rear sight  
6 Buttstock  
3 Front sight  
4 Cocking lever  
7 Buttstock release button  
8 Carrying sling attachment  
points  
11  
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UMP SUBMACHINE GUN  
Buttstock  
The buttstock folds to the right along the upper receiver, and with the  
stock folded, the UMP is only 17.72 inches (450 mm) long. The open  
frame-type design of the buttstock also enables the weapon to be fired  
with the buttstock folded.  
Pressing the catch releases the buttstock for folding. When folded, the  
buttstock engages on the catch located on the forward part of the  
ejection port. For unfolding, the buttstock is lifted off the catch.  
The buttplate has a rubber pad to ensure non-slip contact with the  
shoulder. This cheek piece is also rubber covered to enhance shooter  
comfort during firing. In the forward part of the buttstock a hole is  
provided for insertion of the locking pin during disassembly.  
Fig. 7 Folding the buttstock  
Fig. 8 Unfolding the buttstock  
Assembly Group 2 Bolt Group  
The bolt group, together with the recoil spring assembly, is contained  
inside the upper receiver. The reciprocal movement of the bolt group  
provides for feeding and ignition of the cartridge, for extraction and  
ejection of the spent case as well as for cocking of the hammer. The  
right side of the bolt has a thumb recess for manual closing of the bolt  
(forward assist).  
The recoil spring assembly pushes the bolt forward into the firing  
position The cone-shaped support for the recoil spring assembly is  
housed in the backplate of the lower receiver. The longitudinally  
movable guide ring supports itself within the bolt.  
12  
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DESCRIPTION OF ASSEMBLY GROUPS  
The bolt group (Fig. 8 and 9) consists of:  
1
2
3
4
5
6
bolt  
firing pin spring  
firing pin  
extractor  
firing pin retaining pin  
recoil spring assembly, complete  
6a guide ring  
6b support  
Fig. 8 Bolt Group, assembled  
Fig. 9 Bolt Group, disassembled  
13  
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UMP SUBMACHINE GUN  
Assembly Group 3  
Lower receiver with trigger mechanism  
The lower receiver houses the trigger mechanism with safety/selector  
levers, the backplate, the magazine well, magazine release lever and  
bolt catch. The forward portion of the lower receiver is hooked to the  
upper receiver. The rear portion is fastened to the upper receiver using a  
removable locking pin.  
The safety/selector levers are fitted on both sides of the pistol grip.  
The forward portion of the lower receiver has lugs for attachment to the  
upper receiver. Behind these lugs is the magazine well with the  
magazine release lever.  
Above the magazine release lever is the bolt catch. It serves to hold the  
bolt rearward when the last round is fired and to release the bolt from  
the open position after an empty magazine has been replaced with a  
loaded magazine.The rear side of the lower receiver includes the  
integrated backplate with buffer and support for the recoil spring  
assembly.  
The safety/selector lever of the "Navy" trigger mechanism has three  
positions :  
Position  
Position  
Position  
= Safe  
= Semi Automatic fire  
= Fully Automatic fire  
Trigger Mechanism Variants  
Trigger mechanism for single fire, 2-round burst and fully automatic fire.  
The safety/selector lever has four positions :  
Position  
Position  
Position  
Position  
= Safe  
= Semi Automatic fire  
= 2-round burst  
= Fully automatic fire  
NOTE: UMP trigger mechanisms with various combinations of the  
above firing modes and possibly others may also be available for the  
UMP Submachine gun.  
14  
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DESCRIPTION OF ASSEMBLY GROUPS  
Fig. 10 Lower receiver with trigger mechanism,  
backplate and magazine well  
1
2
3
4
5
6
Trigger  
Magazine release lever  
Magazine well Buffer  
Attachment lugs 10 Support for recoil spring  
Bolt catch 11 Safety/Selector lever  
7
Trigger mechanism  
8
Backplate  
9
Release lever  
12 Trigger guard  
safe  
semi-automatic fire  
fully automatic fire  
Fig. 11a, 11b, 11c Positions of the safety/selector lever for safe,  
single fire, and fully automatic fire  
safe  
semi-auto. fire  
2-round burst  
fully automatic fire  
Fig. 11d, 11e, 11f, 11g Pistol grip with trigger mechanism for safe,  
single fire, 2-round burst, and fully automatic fire  
15  
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UMP SUBMACHINE GUN  
Assembly Group 4  
Magazine  
The magazine housing is constructed from plastic. The transparent  
panels on the magazine enables its contents to be checked visually.  
The magazine consists of: magazine housing, magazine floor plate,  
follower, follower spring and locking plate.  
Fig. 12 Magazine, complete  
Fig. 13 Magazine, disassembled  
1 Magazine housing  
2 Magazine floor plate  
3 Follower  
4 Follower spring  
5 Locking plate  
16  
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ACCESSORIES  
Carrying sling  
The carrying sling (Fig.14) enables the shooter  
to carry the UMP in any of several ways and  
ensures immediate readiness to fire from all  
carrying positions (see pages 43-44).  
Fig. 14 Carrying slingt  
Cleaning Kit  
The cleaning kit includes:  
1 Transport case  
5 Oil bottle  
2 Cleaning patches 6 Bore brush  
3 Cleaning brush 7 Patch holder  
4 Cleaning rod with folding handle  
Fig. 15 Cleaning Kit  
Bruegger & Thomet  
Quick Connect Sound Suppressor  
To mount the suppressor, the locking lever  
is depressed, the suppressor is placed over  
the muzzle, and the locking lever released.  
Gas pressure at the muzzle is dissipated  
within the suppressor’s chamber system.  
This considerably reduces muzzle blast.  
Fig. 16 Sound Suppressor  
Mounting rails (MIL-STD-1913)  
for aiming devices  
The mounting rail (Picatinny  
Rail) is screwed onto the  
molded-in hard points provided  
either on top of the receiver,  
below the forearm or on the right  
or left sides of the forearm.  
Fig. 17 Mounting rails  
for aiming devices  
Hand Stop  
The hand stop prevents the shooter’s  
hand from slipping over the muzzle. It is  
screwed to the lower mounting rail on the  
lower side of the forearm using a long  
screw or directly to the forearm support  
Fig. 18 Hand Stop  
without a mounting rail with a short screw.  
17  
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HANDLING & OPERATION OF THE UMP  
Magazine Loader  
The magazine loader aids in the filling of magazines.  
Fig. 19 Magazine Loader  
Filling the Magazine  
• Grasp magazine.  
• Slide individual cartridges under the magazine lips one by one (Fig. 20).  
• Repeat this process until the required number of cartridges has been  
inserted or the magazine is full.  
Fig. 20 Filling the magazine  
NOTE: Loading more than the prescribed number or rounds (i.e. 25  
cartridges in a 25-round magazine) will prevent the magazine from  
being inserted in the weapon with the bolt forward.  
Filling the Magazine using the Magazine Loader  
• Place the magazine loader onto the magazine, depress and hold.  
• Slide individual cartridge (base first) under the magazine lips (Fig. 21).  
• Release the magazine loader, fully seat the cartridge.  
• Repeat this process until the required number of cartridges has been  
filled in.  
Fig. 20 Filling the magazine using a magazine loader  
18  
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MAGAZINE  
Emptying the Magazine  
• Grasp magazine.  
• With your thumb, push cartridges forward out of the magazine into  
the palm of the other hand  
or  
• Grasp magazine and hold it with the points of the bullets pointing  
towards the bottom.  
• Use a piece of wood to slide the cartridges out of the magazine.  
Insertion and removal of magazine  
• Put the UMP on  
(Safe).  
• Insert magazine into the magazine well (Fig. 22). The magazine catch  
has to engage audibly in the process. Tug on the magazine to ensure  
it is fully engaged.  
• For removal of the magazine, push magazine catch forward (Fig.23)  
and remove magazine downward.  
Fig. 22 Insert magazine  
Fig. 23 Remove magazine  
19  
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UMP SUBMACHINE GUN  
Starting Situation 1: No magazine is present in the weapon. The bolt  
is forward.  
• Put the UMP on  
(Safe).  
• Insert the loaded magazine into the magazine well until the magazine  
catch engages audibly. Tug downward to ensure it is properly seated.  
• The UMP is partially loaded and with the safety on.  
• Pull cocking lever backwards as far as it will go and let bolt snap back  
to its forward position. In the process do not ride the cocking lever  
forward.  
or  
• Pull cocking lever backwards as far as it will go, (Fig. 24 ) and swivel  
it upwards (engage it in the indent) into the open position.  
• Insert the loaded magazine into the magazine well until the magazine  
catch engages audibly. Tug to check.  
• With the open palm of the non-firing hand "slap" the cocking lever  
downward and forward to chamber a round. During this process do  
not ride the cocking lever forwards.  
The UMP is now fully loaded and with the safety on.  
FIg. 24 Pull cocking lever backwards  
20  
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LOADING THE SUBMACHINE GUN  
Starting Situation 2: There is an empty magazine in the weapon.  
The bolt is held back by the bolt catch.  
• Put the UMP on  
(Safe).  
• Push magazine catch forward and remove empty magazine.  
• Insert the filled magazine into the magazine well until the magazine  
catch engages audibly. Tug to check.  
• Depress upper end of bolt catch (Fig. 25), thus releasing the bolt and  
allowing it to snap forwards.  
• The UMP is now fully loaded and with the safety on.  
FIg. 25 Depress bolt catch to release the bolt  
21  
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FORWARD ASSIST  
With heavy external fouling of the UMP, (sand, sludge) or to load the  
weapon quietly, the thumb recess on the bolt may be used as a forward  
assist (Fig 25A). To do so use the thumb recess, push bolt forwards  
until it is in the forward most position.  
FIg. 25A Forward Assist  
22  
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STORAGE OF THE WEAPON  
1. Store the weapon clean and lubricated.  
2. Store the weapon without a round in the chamber.  
3. Store the weapon with the cocking lever forward and the hammer  
down (at rest).  
4. After no more than twelve (12) months unload all loaded magazines  
and replace the ammunition with fresh ammunition.  
5. Clean and lubricate the weapon and magazines every twelve (12)  
months while in storage.  
6. Store the weapon is a clean, dry environment with regulated  
temperature controls.  
23  
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UMP SUBMACHINE GUN  
Disassembly of the UMP  
NOTE: The UMP is disassembled and reassembled without the use  
of tools. The use of force is prohibited. The user of this weapon is  
not allowed to disassemble the weapon beyond that which is  
covered in this operators manual. Such disassembly may only be  
carried out by qualified maintenance personnel.  
Safety check  
• Put the UMP on “Safe”.  
• Remove the magazine.  
• Pull cocking lever backwards as far as it will go and engage it in the  
indent in the cocking lever.  
• Check to make sure the cartridge chamber is empty.  
• Swivel cocking lever downward and allow the bolt to move forward.  
Disassembly into assembly groups  
• Detach carrying sling.  
• Unfold buttstock.  
• Pull out buttstock locking pin and store in the hole on the buttstock.  
• Swivel lower receiver downward and detach (Fig. 26).  
attachment lugs  
support bolts  
Fig. 26 Detaching lower receiver  
CAUTION: When detaching the UMP lower receiver during  
disassembly, ensure the lower receiver does not rotate more than  
80° around the axis where the attachment lugs hook on to the  
support bolts. Doing so will severely damage the attachment lugs.  
24  
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DISASSEMBLY  
• Fold buttstock.  
• Pull back cocking lever and remove recoil spring assembly with bolt to  
the rear (Fig. 27).  
Fig. 27 Removing recoil spring assembly with bolt  
25  
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UMP SUBMACHINE GUN  
Disassembly of the Bolt  
• Push and hold firing pin forward.  
• Pull out firing pin retaining pin to the left (Fig. 28).  
• Remove firing pin and firing pin spring to the rear. To do this, push  
locking catch to the right (Fig. 29). With your thumb prevent the firing  
pin with firing pin spring from springing out.  
locking  
catch  
Fig. 28  
Fig. 29  
Pull out firing pin retaining pin Push locking catch to the right  
WARNING: Never disassemble the firing pin. It is possible to  
assemble the firing pin assembly incorrectly and in doing so,  
disabling the UMP firing pin safety. Please contact HK for more  
information.  
Assembly of the Bolt  
• Place firing pin spring onto firing pin.  
• Insert firing pin spring and firing pin into the bolt from the rear and  
push them forwards (Fig. 30).  
• Using any pointed object push firing pin forwards (Fig. 31).  
• Insert firing pin retaining pin from the left to retain firing pin in the bolt.  
Fig. 30  
Fig. 31  
Insert firing pin spring  
and firing pin  
Push firing pin forwards  
26  
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DISASSEMBLY  
Disassembly of the Magazine  
• Depress locking plate through magazine floor plate and slide  
magazine floor plate to the rear.  
• Detach magazine floor plate to the rear.  
• Remove follower spring with locking plate and follower.  
CAUTION: Magazine floor plate is under spring tension. With your  
thumb secure locking plate with follower spring to prevent it from  
springing out.  
Assembly of Magazine  
• Insert follower and follower spring with locking plate into the  
magazine housing from below.  
• Fully depress follower spring and locking plate (Fig.29) and slide  
magazine floor plate onto magazine housing from the rear.  
• Push magazine floor plate forwards as far as it will go.  
• Check that the floorplate is fully seated and secured in place by the  
tab of the locking plate.  
27  
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UMP SUBMACHINE GUN  
Reassembly of the UMP  
• Fold buttstock.  
• Insert the bolt and recoil spring assembly to the receiver from the rear.  
• Unfold buttstock.  
• From below, engage lower receiver (hammer between cocked and  
released positions) into the support bolts on the upper receiver and  
swivel it upwards (Fig. 32).  
• Insert locking pin into the upper receiver to secure lower receiver.  
• Put the UMP on  
(Safe).  
• Insert empty magazine.  
• Carry out a function check as described on page 30 (cock, check bolt  
catch function, set safety/selector lever on “Fire”, pull trigger, set  
safety/selector lever to “Safe”).  
• Attach carrying sling (Fig. 33).  
support bolts  
Fig. 32  
Fig. 33  
Engage lower receiver  
Attaching carrying sling  
28  
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FUNCTION CHECK  
NOTE: A Function Check should be performed anytime the weapon  
is reassembled. This quick check indicates whether or not the  
weapon has been properly assembled and/or assembled with all  
components. A properly executed Function Check can also reveal  
many of the more obvious malfunctions that could occur between  
the interactive components of the weapon. ALWAYS clear the  
weapon before performing the Function Check! ENSURE the  
weapon is clear!  
1. Clear the weapon.  
2. Place the cocking lever and bolt group in the forward position.  
3. With the weapon on “Safe”, pull the trigger. Hammer should not fall.  
4. Place the weapon on “Semi-automatic”. Pull the trigger and hold the  
trigger back. Hammer should fall.  
5. Still holding the trigger back, recock the weapon. Release the trigger.  
Listen for the “click” of the trigger and sear resetting. Pull the trigger.  
Hammer should fall.  
6. Place the weapon on “Burst”, if applicable. Recock the weapon. Pull  
the trigger and hold the trigger back. Hammer should fall.  
7. Still holding the trigger back, recock the weapon. Release the trigger.  
You should not hear the hammer fall. (The hammer should already be  
forward).  
8. Place the weapon on “Fully-automatic”, if applicable. Recock the  
weapon. Pull the trigger and hold the trigger back. Hammer should  
fall.  
9. Still holding the trigger back, recock the weapon. Release the trigger.  
You should not hear the hammer fall. (Again, the hammer should  
already be forward).  
The Function Check is now complete.  
29  
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UMP SUBMACHINE GUN  
Operator Cleaning  
• The functional performance of any mechanical device varies greatly  
on the quality and frequency of the maintenance performed on that  
item. Firearms are no exception. The operator spends most of the  
time with the weapon and therefore has the best opportunity to  
perform the necessary upkeep required to insure top performance at  
all times.  
• Metal components of new UMPs are coated in a thick, oily  
preservative that should be removed prior to the weapon being used  
or fired. This preservative oil, applied by HK personnel prior to the  
shipment of the weapons from the manufacturing facility in Germany,  
guarantees that the weapons and accessories will remain corrosion-  
free during storage and transport. However, this preservative fluid is  
not considered a lubricant and therefore should be removed and  
replaced with a high-quality weapons lubricant whenever possible.  
This preservative fluid attracts debris and dirt and possesses little or  
no lubrication qualities.  
• Cleaning the UMP, especially with its polymer construction, need not  
take hours and a great deal of effort. With the right equipment a very  
fouled UMP should be able to be thoroughly cleaned in less than 10  
minutes. A solvent tank where the parts can be immersed in and  
scrubbed will save a great deal of time and effort as will compressed  
air to blow off the fouling and solvent or to spread the lubricant. There  
are companies, such as Safety-Kleen, that sell or rent such solvent  
tanks and will exchange the solvent on a regular basis at a  
reasonable price.  
NOTE: If using Ultra Sonic-type cleaning machines, do not immense  
the painted portion of the UMP, specifically the color pictogram firing  
mode markings on the lower receiver. Ultra sonic cleaning will  
remove the markings!  
• If such a set up is not available to you, a complete weapons cleaning  
kit specially designed for the HK UMP will reduce your cleaning time  
and make the job easier.  
• Any quality weapons solvent or oil can be used to clean the UMP.  
Basically, if it’s safe to put your bare hands into it won’t hurt the  
surfaces of the weapon. Break-Free (CLP), Ballistol, Militec or any  
of the other brand-name cleaners or lubricants specifically designed  
for use with weapons will work well on the UMP.  
• At HK we recommend two types of operator cleaning. Normal  
cleaning and Major cleaning.  
30  
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CLEANING  
Normal cleaning  
Performed after each firing or every twelve (12) months.  
Major cleaning  
Often referred to as “detailed cleaning”. Performed on an unsuppressed  
UMP after 1,000 rounds (500 for a suppressed UMP) or when the  
weapon is exposed to or excessively laden with sand, dust, water or  
other visible contaminants or foreign matter.  
• The cleaning intervals listed here are recommendations only!  
Your intervals between cleaning will vary greatly depending on many  
factors to include the type of ammunition used, the environment in  
which the weapon is used, and the thoroughness of your cleaning, etc.  
Normal Cleaning  
1. CLEAR THE WEAPON!  
2. Disassemble the weapon into the major assembly groups.  
Bruegger & Thomet Quick Connect Sound Suppressor Use a nylon  
bristle toothbrush and rag or swab to remove all fouling from the  
attachment area and locking lever of the sound suppressor. Tap the  
sound suppressor lightly on a padded surface or blow it out with  
compressed air to remove any loose fouling from inside the  
suppressor body. (DO NOT immerse the sound suppressor in solvent  
or insert any rods, brushes or patches into the sound suppressor  
body! Wipe the outside of the sound suppressor off with a clean, oil-  
free rag. Do not apply oil to the outside of the sound suppressor or it  
will burn off during firing and obscure the operators view of the target.  
Multi-purpose carrying sling The nylon webbing and plastic com-  
ponents of the multi-purpose carrying sling can be cleaned using  
warm soap, water, and a soft bristled brush. Allow the sling material to  
dry completely before storage or use.  
Buttstock Simply remove any foreign debris from the exterior polymer  
and rubber surface of the buttstock using a toothbrush, rag, swabs or  
compressed air when available.  
Lower receiver Remove any foreign debris from the plastic pistol grip  
using a tooth-brush, rag, swabs or compressed air. Scrub the top of  
the hammer, ejector and the area around the front of the ejector and  
release lever with a small amount of solvent or oil to break up the  
carbon fouling. Remove the loose fouling and debris by rinsing the  
components in the a solvent tank or by using rags, swabs, or  
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UMP SUBMACHINE GUN  
compressed air.  
Forearm / foregrip Remove any foreign debris from the forearm or  
optional foregrip using a toothbrush, rag or compressed air.  
Upper receiver with barrel Start with the bore and chamber.  
Bore – Apply a liberal amount of solvent to a bronze bristle bore  
brush of the appropriate caliber. Always insert the bore brush from the  
chamber end and push it all the way through the barrel in the direction  
that the bullet travels. Pull the brush back through the barrel. DO NOT  
allow the brush to stop in the bore or it may get stuck! Repeat this  
in/out procedure for a minimum of three complete trips. Remove the  
bore brush and let the solvent work in the bore for a few minutes  
while you clean other components.  
Chamber – Apply a liberal amount of solvent to the appropriate bore  
brush. Insert the brush through the back of the receiver into the  
chamber. DO NOT push the brush past the chamber! Work the brush  
back and forth in the chamber at least three times. Remove the brush  
and let the solvent go to work on the fouling for a few minutes while  
you work on other components.  
Chamber face – This area is easily tackled using the special  
Chamber Face brush available in the HK Field Weapons Cleaning Kit  
for the UMP submachine gun. Attach this brush to the cleaning rod  
and lock the handle so that the rod and brush can be turned together.  
Apply a liberal amount of solvent to the bristles of the brush. Insert the  
brush through the back of the receiver until it makes contact with the  
area surrounding the opening to the chamber and bore. With slight  
inward pressure, rotate the brush in a clockwise direction to break up  
the carbon fouling built-up on the face of the chamber. Continue this  
procedure until you are satisfied with your efforts.  
Upper Receiver – Apply a few drops of solvent to a toothbrush and  
scrub the area around the chamber face and along the length of the  
receiver rails to break-up the carbon fouling.  
Muzzle and accessory attachment interface – Use a nylon bristle  
toothbrush and a small amount of solvent to remove any fouling from  
the muzzle where the sound suppressor and muzzle mounted  
accessories attach. Remove all of the fouling, carbon, and visible  
debris from the entire upper receiver using a solvent tank and  
compressed air or swabs, patches, rags, etc. Run al least three clean  
patches of the appropriate size all the way through the bore in the  
direction of bullet travel to remove the loose fouling and solvent.  
32  
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CLEANING  
Bolt group  
Scrub all parts of the bolt group with a toothbrush and solvent where  
carbon is visible, especially around the face of the bolt and the  
extractor. Do not attempt to remove the extractor for cleaning!  
There is no functional need to remove the extractor for normal  
cleaning. Remove the loose fouling from all parts using a rag, swabs  
or compressed air.  
Magazine Don’t forget the magazines! They are very important and very  
often overlooked during cleaning. Many stoppages occur as a result of  
improperly maintained magazines.  
Apply a few drops of solvent to a toothbrush and scrub the top of the  
magazine to remove any visible carbon fouling or loose debris. Pay  
special attention to the front edge of the housing, feed lips, and the  
follower.  
Remove the solvent and loose fouling from the magazine using a rag,  
swabs or compressed air.  
Major Cleaning  
As mentioned earlier, Major cleaning should be performed after 1,000  
rounds are fired through an unsuppressed UMP or 500 rounds through a  
suppressed UMP. Major cleaning is also performed when the weapon  
has been immersed in water or is laden with large amounts of visible  
foreign matter or fouling.  
During Major cleaning, all weapon components except the sound  
suppressor and the carrying sling, should be rinsed with or immersed in  
solvent and scrubbed thoroughly with a brush. This includes the  
magazine and it’s parts. The components can then be dried using a rag  
or swabs, though compressed air is preferable for Major cleaning.  
If any assembly groups require a more thorough cleaning, an “Ultra-  
Sonic” cleaning machine can be used containing any solvent that it is  
safe to place your bare hands in, as a general rule.  
However, avoid placing painted surfaces such as the firing mode  
markings on the lower receiver into an ultra-sonic cleaner, as this may  
remove the colored markings. Further disassembly of any assembly  
group(s) beyond the level described above must be performed by, or at  
a minimum supervised by, an HK factory-trained armorer.  
33  
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UMP SUBMACHINE GUN  
Operator inspection  
During or after cleaning the operator should inspect the weapon and it’s  
components for any irregularities that may causes problems during it’s  
operation. If any potential deficiencies are noted, they should be  
corrected immediately and/or brought to the attention of the unit armorer.  
In general, the operator should keep a watchful eye out for the following  
discrepancies both in the weapon as a whole and in each assembly  
group.  
• Improper function  
• Missing parts  
• Cosmetic flaws (cracks, dents, burrs, rust, etc.)  
• Improper assembly  
• Loss of spring tension (where applicable)  
• Unusual looseness (where applicable)  
• Cracked welds  
• Excessive wear  
• Absence of protective finish (where applicable)  
• Absence of proper lubrication  
Also check these more areas where problems may begin in the UMP.  
Lubrication  
Any type of high-quality, medium-weight lubricant (oil) specifically  
designed for use on firearms such as Break-Free (C.L.P.) Ballistol, or  
Militec will work well on the HK UMP submachine gun. DO NOT use  
lubricants/cleaners that boast of their ability to penetrate metal (i.e.  
WD-40, Tri-Flow, etc.) as these substances may deaden primers.  
Where and how much?  
No Lube – (surface is dry and not slippery to the touch)  
• Sound suppressor body  
• Sling  
• Plastic components  
Light Lube – (finger run across surface yields little or no lube)  
• Bore and chamber  
• All metal parts (except sound suppressor)  
• Muzzle  
• Magazine spring  
• Axles of all operating controls (cocking lever, bolt  
catch, safety/selector lever, magazine catch, etc.)  
• Rear sight assembly  
34  
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LUBRICATION  
• All metal accessories  
Medium Lube – (finger run across surface yields some lube but lube  
does not run down surface when held in a vertical position)  
• Bolt group with recoil spring and guide rod  
Heavy Lube – (Lube runs down surface when held in a vertical  
position) No heavy lube is required on the HK UMP!  
• Reapply lubrication to the bolt of the UMP periodically during firing as  
it burns off from the heat. Sound suppressed weapons generate more  
smoke and noxious gases especially when over lubricated.  
• Apply lubricant using a shaving brush, swabs, patches, or rag. A spray  
bottle also works well using compressed air to circulate the lubricant  
into all parts and to remove the excess.  
Special use and maintenance of HK sound suppressed weapons  
In addition to the basic maintenance instructions provided earlier, sound  
suppressed weapons require additional special attention from the  
operator. Consult the instructions received from the manufacturer with  
the sound suppressor for additional guidance.  
All weapons with sound suppressors require more cleaning than the  
same type of weapon without a sound suppressor. This is because the  
sound suppressor is designed to capture or “suppress” the expanding  
propellant gases that exit the muzzle of the weapon behind the  
projectile. These gases exit the weapon at a supersonic velocity causing  
a “muzzle blast”. The sound suppressor captures these propellant  
gases, contains them within a series of baffles or chambers and allows  
them to escape at a slower velocity thus eliminating the muzzle blast.  
At the same time that the gases are contained, so is the carbon fouling  
and propellant debris that would normally be blown out of an  
unsuppressed weapon with the propellant gases. More fouling and  
debris stays behind in a sound suppressed weapon and thus there is  
more for the operator to remove during his cleaning.  
In order to be effective, a sound suppressed weapon must also provide  
some means to reduce or eliminate the supersonic “crack“ of the  
projectile as it leaves the muzzle at a supersonic velocity (above 1,088  
feet/second at sea level).  
This can be accomplished in two ways. One. By venting gases from  
35  
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UMP SUBMACHINE GUN  
behind the projectile as it passes through the bore and sound suppressor  
thus lowering the exit velocity of the bullet below 1,088 feet/second.  
Or two, by firing ammunition in the weapon that is down-loaded to a  
velocity below the supersonic range. This is the method used in the HK  
UMP submachine gun. For this reason this ammunition is termed  
“subsonic” and usually falls into the range between 875 – 1,050  
feet/second. Both methods are effective but each has it’s own  
disadvantages and advantages.  
There are two different styles of sound suppressors available for use on  
the UMP submachine gun, a quick connect aluminum or stainless steel  
sound suppressor.  
Both versions are of the “wipeless” design, meaning they have no  
rubber or synthetic membranes (wipes) that the bullet must penetrate.  
The projectile does not touch any portion of the wipeless sound  
suppressor. Wipeless designs are far more durable than other designs  
and generally give the best accuracy results.  
UMP with quick connect sound suppressor  
• The HK UMP submachine guns are designed to be fired using  
supersonic or subsonic ammunition with any weight projectile and with  
or without the sound suppressor attached.  
• The Aluminum Bruegger & Thomet Quick Connect UMP .45 caliber  
sound suppressor is 6.70 inches long and weighs .99 pounds. It is  
intended to be used with subsonic ammunition for maximum sound  
suppression. The UMP does not have a vented barrel as is found  
on the HK MP5SD and therefore does not lower the velocity of the  
ammunition fired in it. These quick connect sound suppressors can be  
used with supersonic ammunition but the supersonic “crack“ of the  
projectile will still remain even though the sound suppressor does  
eliminate the “muzzle blast” caused by the propellant gases. Other  
sound suppressors are available for use on the UMP, contact HK for  
additional guidance.  
• Accuracy from the quick attach sound suppressor is excellent, often  
better than the weapon without the sound suppressor attached,  
though there is sometimes a slight change in zero when the sound  
suppressor is attached. This is mostly due to the longer distance that  
the projectile must pass through (similar to firing through a longer  
barrel) on it’s way to the target.  
• Effectiveness and service life of sound suppressors varies greatly due  
to countless variables. Some of these variables include the type and  
quantity of ammunition used, the predominant mode of fire used, the  
operational environment in which the weapons are employed, etc.  
36  
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SOUND SUPPRESSOR  
Generally, the aluminum Bruegger & Thomet UMP sound  
suppressors when used with the recommended ammunition provide  
20–25 decibels (dBA) sound reduction when compared to an  
unsuppressed weapon.  
• An aluminum sound suppressor will generally maintain its  
effectiveness to 20,000 rounds; stainless steel suppressors to 40,000  
rounds or more.  
• Older sound suppressors can be replaced by the operator for a  
reasonable cost. Many teams will keep the older sound suppressor for  
training and maintain the newer one for operational use where peak  
performance is desired.  
Observe the following recommendations  
• DO NOT attempt to open the sealed sound suppressor body  
• DO NOT allow the sound suppressor to loosen during use.  
• DO NOT use any form of tool or wrench to install or remove the  
sound suppressor.  
• Always tug forward on the UMP sound suppressor after mounting to  
ensure that it is properly attached.  
• If the sound suppressor will not detach from the weapon, consult the  
section entitled “Normal Cleaning” of the sound suppressor or call  
Heckler & Koch for guidance.  
• DO NOT fire the UMP with the aluminum sound suppressor full of  
water. Allow the water to drain from the sound suppressor before  
attempting to fire the weapon.  
• DO NOT attempt to fire the weapon if the sound suppressor has been  
dented or damaged or there is damage around the exit hole or if the  
sound suppressor fits loosely on the weapon.  
• DO NOT insert anything into the body of the sound suppressor such  
as a cleaning rod or brush.  
• DO NOT add to or fire the weapon with oil, grease or any foreign  
matter inside unless directed to by the manufacturer of the specific  
sound suppressor.  
• Keep the muzzle and attachment interface for the sound suppressors  
and muzzle mounted accessories as clean as possible at all times to  
insure that the sound suppressor and accessories can be easily  
attached and detached when required. Clean the muzzle with a nylon  
toothbrush or patch soaked in oil or solvent during each cleaning.  
Lightly lube the muzzle once it is clean. A dirty muzzle can make it  
very difficult to attach and detach the sound suppressor.  
37  
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UMP SUBMACHINE GUN  
Ammunition  
The UMP submachine gun was designed to use ammunition designed to  
NATO or SAAMI specifications. Like an automobile engine, you cannot  
expect top performance by using poor quality fuel. The same applies to  
firearms. There are a number of general considerations that should be  
made when choosing the type of ammunition you plan to use in the  
UMP.  
DO USE  
• Ammunition of the appropriate caliber and of recent manufacture  
• Clean burning ammunition  
• Non-corrosive ammunition  
• Jacketed Hollow Point (JHP), “Silver-Tip”, ball, truncated cone, “Hydra  
Shok”, +P, etc.  
• Limited quantities of .45 Super ammunition in the UMP45 model  
DO NOT USE  
• Reloads or remanufactured ammunition. Beware of military surplus,  
foreign or outdated ammunition.  
• Non-jacketed or exposed lead ammunition  
• Corrosive ammunition (primer and/or propellant)  
• Any ammunition that exceeds NATO or S.A.A.M.I. pressure limits  
• Empty cases as “dummy“ (inert) rounds, as damage may result to the  
weapon, especially the synthetic magazines employed in the UMP.  
Use complete dummy rounds available for training purposes.  
• Aluminum cased ammunition (i.e. CCI Blazer) in the UMP40.  
Stoppages  
In the event of stoppages on the UMP, the weapon is to be considered  
loaded until the actual cause of the stoppage has been determined.  
During the elimination of stoppages, safety precautions are to be taken  
into account.  
In the event of stoppages on the UMP, for example the cartridge fired  
from the UMP is not ignited, the bolt assembly does not close  
completely, or the spent cartridge case is not ejected, the following  
immediate steps have to be taken:  
1. Put the UMP on  
(Safe).  
2. Remove the magazine.  
3. Unload the UMP.  
4. Ensure that barrel, cartridge chamber and receiver are free of  
obstructions.  
38  
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TROUBLESHOOTING  
5. Next, determine and eliminate the cause of the stoppage. The  
items indicated in the following tables do not cover all stoppages  
theoretically possible. A given stoppage may also have been caused  
by other reasons than the ones indicated.  
Stoppage  
Cause  
Remedy  
Cartridge not ignited  
Ammunition fault  
(Dud round)  
Recock UMP  
Firing pin damaged  
or broken  
Take UMP to  
maintenance shop  
Hammer spring damaged  
damaged or broken  
Take UMP to  
maintenance shop  
Bolt did not stay open on  
the last shot  
Cartridge case stuck in  
chamber because it is  
deformed or the chamber  
is dirty  
Unload. Retract bolt to  
eject spent case. Clean  
if fouled. If required take  
UMP to maintenance shop  
Cartridge case not  
extracted or ejected  
Chamber is dirty.  
Extractor broken.  
Clean cartridge chamber.  
Take UMP to  
maintenance shop  
Ejector damaged  
Take UMP to  
maintenance shop  
Insufficient bolt recoil  
Unload. Retract load via  
cocking lever to eject spent  
case. Check for smooth  
movement of bolt and  
check chamber for fouling.  
Clean if required.  
39  
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UMP SUBMACHINE GUN  
Stoppage  
Cause  
Remedy  
No cartridge fed by bolt.  
Magazine not properly  
inserted.  
Insert magazine properly.  
Magazine loose  
Check magazine catch and  
notch on magazine. If  
required take UMP to  
maintenance shop.  
Follower spring lame  
Replace magazine or  
follower spring and take to  
maintenance shop.  
Magazine lips damaged  
Replace magazine or  
magazine housing and  
take the damaged one to  
maintenance shop  
Bolt not fully closed.  
Cartridge not fully fed.  
Cartridge chamber dirty  
Cartridge damaged  
Recoil spring lame  
Clean cartridge chamber.  
Recock  
Take UMP to maintenance  
shop  
Improperly cocked  
Allow cocking lever to snap  
forward. On releasing  
cocking lever do not ride it  
forward.  
Bolt does not stay open  
after last shot  
Magazine spring lame.  
Replace magazine and  
take damaged one to the  
maintenance shop  
Catch damaged  
Take UMP to maintenance  
shop.  
Magazine stuck in  
magazine well  
Magazine damaged  
Replace magazine spring  
and take damaged one to  
to the maintenance shop  
Magazine catch defective  
Take UMP to maintenance  
shop.  
40  
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CARRYING SLING  
Carrying sling  
The carrying sling enables the UMP to be carried in several ways. In this  
process, the buttstock may be folded up or unfolded.  
The carrying sling is attached to the mounting points on the receiver,  
handstop, or buttstock via the carbine hooks.  
Length Adjustment  
• Close coupler  
• Rest the carrying sling between thumb and index finger and let the  
UMP hang down in a horizontal position. Adjust the length in such a  
way that there is a space of approximately 10 cm (4 inches) between  
your forearm and the UMP (Fig. 34).  
For adjustment  
• Slide the forward buckle and coupler with the sewn-up end as far as  
possible up to the front carbine.  
• Somewhat loosen the belt loop in the rear buckle.  
To shorten the carrying sling, pull the upper loop forwards  
To lengthen the carrying sling, pull the upper loop to the rear.  
• Tighten loop in the buckle  
• Tighten carrying sling  
Routing the Carrying sling  
In order to carry the UMP laterally against the body or in front of the  
body (ready position), or on the back, the carrying sling must be properly  
routed. To do so:  
• Pull the two halves of the carrying sling apart and upwards.  
• Place the upper part of the carrying sling onto your shoulder over your  
head.  
41  
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UMP SUBMACHINE GUN  
Fig. 34 Length adjustment  
Fig. 35 Place upper half onto shoulder over the head  
42  
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CARRYING SLING  
Carrying modes  
Fig. 36 UMP across the chest  
Fig. 37 UMP on the back  
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UMP SUBMACHINE GUN  
Firing positions  
Fig. 38 UMP fired from the shoulder  
Fig. 39 UMP fired from the hip  
44  
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SIGHT ALIGNMENT FOR THE UMP  
Sight Adjustment  
If the point of impact has to be corrected, this will be done by adjustment  
of the rear sight using the Allen wrench provided with the weapon.  
The UMP is zeroed at the factory to hit the point of aim at 25 meters  
(27.3 yards).  
Elevation adjustment  
To lower the weapon’s point of impact, turn the elevation adjustment  
screw clockwise.  
To raise the weapon’s point of impact, turn the elevation adjustment  
screw counterclockwise.  
NOTE: 1 revolution of the elevation adjustment screw changes the  
point of impact by 4.5 centimeters (1.77 inches) at a range of 25  
meters (27.3 yards).  
Windage adjustment  
To move the weapon’s point of impact to the left, turn the windage  
adjustment screw counterclockwise.  
To move the weapon’s point of impact to the right, turn the windage  
adjustment screw clockwise.  
NOTE: 1 click of the windage adjustment screw changes the point of  
impact by 1.15 centimeters (.45 inches) at a range of 25 meters (27.3  
yards).  
Fig. 40 Elevation adjustment  
Fig. 41 Windage adjustment  
45  
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UMP SUBMACHINE GUN  
Sight alignment for UMP  
Point of aim  
Rear sight  
Aperture  
Correct point of aim  
Even circle of light  
Circle of light  
Front sight holder  
Front sight post  
Impact as with incorrectly  
centered front sight = right  
Impact as with incorrectly  
centered front sight = left  
Impact as with full sight  
= high  
Impact as with fine sight  
= low  
Fig. 42 Sight pictures  
46  
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SPECIFICATIONS  
Specifications UMP45  
Caliber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45 ACP  
Operating principle . . . . . . . . . . . . . . . . . . . . . . . . . .Simple blow back, firing from a closed bolt position  
Dimensions  
Overall length, buttstock extended . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 690 mm (27.17 in)  
Overall length, with sound suppressor, buttstock extended . . . . . . . . . . . . . . . . . . . . 860 mm (33.86 in)  
Overall length, buttstock folded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450 mm (17.72 in)  
Overall length, with sound suppressor, buttstock folded . . . . . . . . . . . . . . . . . . . . . . 620 mm (24.41 in)  
Overall width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.5 mm (2.50 in)  
Overall height with magazine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326 mm (12.83 in)  
Barrel length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mm (7.87 in)  
Twist length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 406 mm (15.98 in)  
Sight radius . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325 mm (12.80 in)  
Weights  
UMP without magazine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . approximately. 2.26 kg (4.93 lb.)  
Magazine, empty (25 rounds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.17 kg (.38 lb.)  
Carrying sling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.10 kg (.22 lb.)  
Sound suppressor (B&T) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.38 kg (.84 lb.)  
Other Data  
Muzzle velocity (M1911) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . approximately. 260 m/s (853 fps)  
Muzzle velocity (+P) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . approximately. 380 m/s (1,247 fps)  
Cyclic rate of fire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . approximately. 600 rpm (M1911)  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . approximately. 700 rpm (+ P)  
Firing modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Semi -automatic, 2-round burst, fully automatic  
Sights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Modular approach,  
Standard adjustable mechanical sight,  
Accessory mounting rails for optional aiming devices  
Bore profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6x polygonal, right-hand twist  
Specifications UMP40  
Caliber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40 S&W  
Operating principle . . . . . . . . . . . . . . . . . . . . . . . . . .Simple blow back, firing from a closed bolt position  
Dimensions  
Overall length, buttstock extended . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .690 mm (27.17 in)  
Overall length, with sound suppressor, buttstock extended . . . . . . . . . . . . . . . . . . . . 860 mm (33.86 in)  
Overall length, buttstock folded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450 mm (17.72 in)  
Overall length, with sound suppressor, buttstock folded . . . . . . . . . . . . . . . . . . . . . . 620 mm (24.41 in)  
Overall width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.5 mm (2.50 in)  
Overall height with magazine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303 mm (11.93 in)  
Barrel length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mm (7.87 in)  
Twist length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 377 mm (14.84 in)  
Sight radius . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325 mm (12.80 in)  
Weights  
UMP without magazine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .approximately. 2.1 kg (4.63 lb.)  
Magazine, empty (30 rounds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.17 kg (.38 lb.)  
Carrying sling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.10 kg (.22 lb.)  
Sound suppressor (B&T) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.38 kg (.84 lb.)  
Other Data  
Muzzle velocity (Winchester 180 grain JHP) . . . . . . . . . . . . . . . . . . . .approximately 358 m/s (1174 fps)  
Muzzle velocity (Corbon 150 grain JHP +P) . . . . . . . . . . . . . . . . . . . . approximately 384 m/s (1260 fps)  
Cyclic rate of fire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . approximately 745 rpm  
Firing modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Semi -automatic, 2-round burst, fully automatic  
Sights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Modular approach,  
Standard adjustable mechanical sight,  
Accessory mounting rails for optional aiming devices  
Bore profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6x polygonal, right-hand twist  
47  
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UMP SUBMACHINE GUN  
Item  
Description  
Part No.  
Item  
Description  
Part No.  
Upper receiver with barrel,complete (I - 21)  
Upper receiver, incomplete  
Front sight  
Roll pin, front sight, 4x 144 mm  
Rear sight, complete. (4 - 10)  
Sight support  
217503  
217509  
217506  
928747  
217513  
217992  
217515  
217516  
217517  
217518  
217504  
217505  
987695  
217519  
217508  
217507  
986546  
219403  
219402  
988425  
219399  
219364  
219342  
20  
21  
22  
Insert plate, handstop  
Cylindrical screw, handstop 5 x16 mm  
Axle, buttstock  
Butt stock, complete (24- 25)  
Locking pin, complete.  
Buttstock, incomplete  
Buttstock lock  
Spring for buttstock lock  
Bolt, complete .45 ACP (27 - 31)  
Bolt, complete .40 S&W (27 - 31)  
Bolt , incomplete, .45 ACP  
Bolt , complete., .40 S&W  
Extractor .45 ACP  
Extractor .40 S&W  
Firing pin assembly, complete  
Firing pin spring  
Firing pin retaining pin  
Recoil spring assembly, complete  
Pistol grip, complete. (33 - 58)  
Pistol grip, incomplete  
Trigger  
219343  
219414  
219401  
217558  
217197  
217559  
205454  
205455  
217572  
217562  
217574  
217564  
217573  
217231  
217555  
217523  
217587  
217548  
217531  
217546  
205420  
205422  
217532  
1
2
3
23  
24  
25  
26  
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
Flat spring  
Rear sight  
Windage adjustment screw  
Rear sight spring  
Sight support spring  
Elevation adjustment screw  
Roll pin, sight support  
Cocking lever  
Cocking lever spring  
Cocking lever support  
Roll pin, cocking lever support  
Barrel .45 ACP  
Barrel .40 S&W  
Roll pin, barrel, 6 x 32mm  
Ejector  
Hand stop, complete. (19-21)  
Hand stop, incomplete  
27  
27  
28  
29  
30  
31  
32  
17  
18  
33  
34  
35  
36  
Trigger spring  
Axle (3x)  
19  
48  
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EXPLODED DIAGRAM & PARTS LIST  
Item  
Description  
Sear  
Sear spring  
Release lever  
Release lever spring  
Hammer  
Hammer spring, left  
Hammer spring, right  
Notched disk  
Compression spring  
Index plate  
Slide  
Safety lever, left  
Safety lever, right  
Magazine release  
Magazine release spring  
Magazine release axle  
Bolt catch  
Bolt catch spring  
Roll pin,bolt catch  
Backplate  
Part No.  
Item  
Description  
Part No.  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
205439  
205421  
217535  
217534  
217545  
217533  
217585  
205417  
205418  
205419  
214608  
217753  
214607  
217537  
217536  
217538  
217540  
217539  
928080  
217541  
217544  
205438  
217576  
Magazine complete .40 (59 - 63)  
Magazine housing, .45 ACP  
Magazine housing, .40 S&W  
Follower .45 ACP  
217766  
217581  
217767  
217577  
217769  
217578  
217799  
217579  
217770  
217580  
219362  
219660  
219413  
219363  
219661  
219413  
217831  
217831  
219085  
219404  
59  
60  
61  
62  
63  
Follower .40 S&W  
Magazine spring .45 ACP  
Magazine spring .40 S&W  
Locking plate .45 ACP  
Locking plate .40 S&W  
Floor plate  
Picatinny rail, short, complete with screws  
Picatinny rail, short  
Cylindrical screw (2x)  
Picatinny rail, long, complete. (66 - 67)  
Picatinny rail, long  
Cylindrical screw (2x)  
64  
65  
66  
67  
68  
Sound suppressor, complete .45 ACP *  
Sound suppressor, complete .40 S&W *  
Carrying sling, UMP complete.  
Magazine loader *  
69  
70  
Buffer  
Pistol grip cover  
Magazine complete .45 (59 - 63)  
*
not pictured  
49  
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