Sterling Trucks UMP40 User's Manual
Contents
1. 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 Buffer Pistol grip cover Magazine complete 45 59 63 EXPLODED DIAGRAM amp PARTS LIST Part No 205439 205421 217535 217534 217545 217533 217585 205417 205418 205419 214608 217753 214607 217537 217536 217538 217540 217539 928080 217541 217544 205438 217576 Item 59 60 61 62 63 Description Magazine complete 40 59 63 Magazine housing 45 ACP Magazine housing 40 S amp W Follower 45 ACP Follower 40 S amp W Magazine spring 45 ACP Magazine spring 40 S amp W Locking plate 45 ACP Locking plate 40 S amp W Floor plate Picatinny rail short complete with screws Picatinny rail short Oylindrical screw 2x Picatinny rail long complete 66 67 Picatinny rail long Oylindrical screw 2x Sound suppressor complete 45 ACP Sound suppressor complete 40 S amp W Carrying sling UMP complete Magazine loader not pictured Part No 217766 217581 217767 217577 217769 217578 217799 217579 217770 217580 219362 219660 219413 219363 219661 219413 217831 217831 219085 219404 492. Fully automatic fire Dor OTS ELES e a ee ee a ee ee RE ee de RI NOTE UMP trigger mechanisms with various combinations of the above firing modes and possibly others may also be available for the UMP Submachine gun DESCRIPTION OF ASSEMBLY GROUPS Fig 10 Lower receiver with trigger mechanism backplate and magazine well Trigger 7 Trigger mechanism Magazine release lever 8 Backplate Magazine well 9 Buffer Attachment lugs 10 Support for recoil spring Bolt catch 11 Safety Selector lever Release lever 12 Trigger guard OoaRWND 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 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 ACCESSORIES Carrying sling The carrying sling Fig 14 enables the shooter to carry the UMP in any of seve
3. Sound suppressor BAT 4 5 ede Re eek Belt Re Seis Sale eh es 0 38 kg 84 Ib Other Data Muzzle velocity M1911 vinci cece cane ean et ne yh ne ee ade approximately 260 m s 853 fps Muzzle velocity P osos eee 9er ete xem aee approximately 380 m s 1 247 fps Cyclic tale df fire Loos ouk eR RIXA We GOGGLE POSER PRI C n approximately 600 rpm M1911 idest duse Sheets snd he Fta Me top a Eder Upon a us PO Die ede Sve re io cte UE ER EHE ated approximately 700 rpm P Firing modes esee eth 8G ky EE UR ERE ERE EN EN Semi automatic 2 round burst fully automatic SIGS oy ccd hae Hele hak ik E E ERE AERE RS REA E O en ee Modular approach Standard adjustable mechanical sight Accessory mounting rails for optional aiming devices Bore prone sues wos a rex BUREN wal sot EX ae wake Mae Sew Okey 6x polygonal right hand twist Specifications UMP40 Caliber se coarse n pureadeuriu iudei X93 ORE AEA RE OE EAA DEE Ae eat dob 40 S amp W Operating principle 2 00 Simple blow back firing from a closed bolt position Dimensions Overall length buttstock extended 2 2 0 0 cece ee 690 mm 27 17 in Overall length with sound suppressor buttstock extended 860 mm 33 86 in Overall length buttstock folded 2 0 eae 450 mm 17 72 in Overall length with sound suppressor buttstock folded 2 620 mm 24 41 in Everall width ca toca louie ere Pam tereskbnhefiessetd SESE ee TRU
4. 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 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 UMP SUBMACHINE GUN Assembly Groups 1 Upper receiver with barrel folding buttstock and attachment components 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 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
5. 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 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
6. 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 5 Flip up rear sight 2 Barrel 6 Buttstock 3 Front sight 7 Buttstock release button 4 Cocking lever 8 Carrying sling attachment points 11 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
7. the last shot chamber because it is eject spent case Clean deformed or the chamber if fouled If required take is dirty UMP to maintenance shop Cartridge case not Chamber is dirty Clean cartridge chamber extracted or ejected Extractor broken 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 UMP SUBMACHINE GUN No cartridge fed by bolt Magazine not properly Insert magazine properly inserted 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 chamber dirty Clean cartridge chamber Cartridge not fully fed Cartridge damaged Recock Recoil spring lame 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 Magazine spring lame Replace magazine and after last shot take damaged one to the maintenance shop Catch damaged Take UMP to maintenance shop Magazine stuck in Magazine damaged Replace magazine spring magazine well and take dama
8. 41 Garrying Modes doe SR etes 43 Firing Positloris sanea a caen atte o tied e sed ve vidt dad 44 Sight Alignment for the UMP sssssssseemeeenneen 45 SPCCHICATIONS 2 oe taedet pedi dee eei qat e ad deve 47 Exploded Diagram and Parts List 48 Weapon Service Record sssssssssssssseeeeeee nnns 50 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 e 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 cart
9. E TI Pau CE S 63 5 mm 2 50 in Overall height with magazine lslee A 303 mm 11 93 in Eire lgadi 6S betel osi eS EE SI eene a ou uere Ste toe acca 200 mm 7 87 in Twist length 5 55 35 m Sones stre erae Ede S ye dM eal IPTE sum Rs Cte ES ote 377 mm 14 84 in Sight radi Sss esee rs para x Eyes a ER puer pec p gage a See exe 325 mm 12 80 in Weights UMP without magazine llle approximately 2 1 kg 4 63 Ib Magazine empty 30 rounds ssas ed e Rn RR EE ee Y IRR EROR m 0 17 kg 38 Ib Oarryirig Slings opus so uy oh xot ced RO UP ROH EROR RR ERROR ER P EX C EE XR 0 10 kg 22 Ib Sound suppressor BAT osc 1 cet k ae pte Balt ate Sea a aie Me as 0 38 kg 84 Ib 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 rale of TIR x Lem eta 56 Oh eo PARSE OS P oes RA eun de io approximately 745 rpm Firing InDHes oe terme ER C b aee I Sn Semi automatic 2 round burst fully automatic Sights us Xx vivae eg tee XE DERE DERCERBSC ROGER ENT ME ee ONE Modular approach Standard adjustable mechanical sight Accessory mounting rails for optional aiming devices Bora ONE aiid edo devesco n eos peer EA RARUS OR ee eH awe mit REIR 6x polygonal right hand twist 47 UMP SUBMACHINE GUN Item ons Description Upper receiver with barrel complete I 21 Upper re
10. Operators Manual UMP45 45 ACP UMP40 40 S amp W In a world of compromise some don t HK UMP Submachine Gun CAUTION Read the safety rules before handling the UMP Submachine Gun UMP Universal Submachine Gun Operators Manual Heckler amp 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 www hecklerkoch usa com Specifications and models subject to change without notice TABLE OF CONTENTS Safety Rules on the Use of the HK UMP Submachine Gun 6 General eite t cob ee get oett ie 8 Assembly Groups x ii aget nr e Roo ia e He uti tele 10 Description of Assembly Groups sss 11 Assembly Group 1 Upper Receiver with barrel folding buttstock and attachment components 11 Assembly Group 2 Bolt Group sssseee 12 Assembly Group 3 Lower Receiver with trigger mechanism 14 Assembly Group 4 Magazine seen 16 ACCOSSOTIGS inae eine dedu epu ed tei e dT Dee dee dae Put d ane 17 Garrylhgi liri ste et cer E DLL c mr X 17 Cleaning Bod eeepc ED 17 Special purpose Accessories ssssssssssee eee 17 Sound Suppressor iiaii i ariii ia eene nnne nennt nnns 17 Mounting Rails for Aiming Devices according to MIL STD 1913 17 Harngdstop 7 5 escen
11. WND Ba Fig 9 Bolt Group disassembled 13 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 EJ Safe Position E Semi Automatic fire TDI Position ES 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 EJ Safe Position RE Semi Automatic fire Position 2 round burst Position
12. a ene tne 17 Magazine Loader 21 detention coge ee etis 18 Handling and Operation ssssssssssseeeeeene 18 Filling the Magazine oreinen E E mn 18 Filling the Magazine using the Magazine Loader 18 Emptying the Magazine eese nnne 19 Insertion and Removal of the Magazine eese 19 Loading the Submachine Gun sese 20 Forward ASSIST zu eut pedo ee peut 22 Storage of the Weapon sssssssssseeeneeeeen nnne 23 Disassembly of the UMP sseseeeeeem nn 24 S tely Chack ot aue ans ee 24 Disassembly into Assembly Groups sse 24 Disassembly and Assembly of the Bolt Group sssssss 26 Disassembly and Assembly of the Magazine 27 Reassembly of the UMP 28 Function Check sridenta nae aa ata ad a aad ia haate nnns 29 Operator Cleaning 2t cae Pe ea th 30 Normal Cleaning 2 2 Ite tae aget eL cil gata natn 31 4 TABLE OF CONTENTS Major Cleaning um Cn conet erede ep er ied 33 Operator Inspection cente beet deus 34 LUDPICATION EL e 34 Special Use and Maintenance of HK Sound Suppressed Weapons 35 UMP with Quick Connect Sound Suppressor ssss 36 Arm bitlOri cepere Ee Pee Pip e E n t ee Lent 38 Stoppa gE RC LR 38 Troubleshooting Guide ssssssseeeee enne 39 Carrying Sling ieai a essen ener
13. al 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
14. 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 amp 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 a
15. 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 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 deb
16. 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 1 E ET 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 DESCRIPTION OF ASSEMBLY GROUPS The bolt group Fig 8 and 9 consists of bolt firing pin spring firing pin extractor firing pin retaining pin recoil spring assembly complete 6a guide ring 6b support OaR
17. ceiver incomplete Front sight Roll pin front sight 4x 144 mm Rear sight complete 4 10 Sight support 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 amp W Roll pin barrel 6 x 32mm Ejector Hand stop complete 19 21 Hand stop incomplete Part No 217503 217509 217506 928747 217513 217992 217515 217516 217517 217518 217504 217505 987695 217519 217508 217507 986546 219403 219402 988425 219399 219364 219342 Description 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 amp W 27 31 Bolt incomplete 45 ACP Bolt complete 40 S amp W Extractor 45 ACP Extractor 40 S amp 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 Trigger spring Axle 3x Part No 219343 219414 219401 217558 217197 217559 205454 205455 217572 217562 217574 217564 217573 217231 217555 217523 217587 217548 217531 217546 205420 205422 217532
18. d 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 Ahandstop 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 e 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 amp 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 sull iilii lS 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
19. d 42 CARRYING SLING Carrying modes Fig 36 UMP across the chest Fig 37 UMP on the back 43 UMP SUBMACHINE GUN Firing positions Fig 38 UMP fired from the shoulder Fig S9 UMP fired from the hip 44 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 ES a a el 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 UMP SUBMACHINE GUN Sight alignment for UMP Point of aim Rear sight Correct point of aim Aperture Even circle of light Circle of lig
20. 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 amp 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 usi
21. ease the bolt 21 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 Flg 25A Forward Assist 22 On STORAGE OF THE WEAPON Store the weapon clean and lubricated Store the weapon without a round in the chamber Store the weapon with the cocking lever forward and the hammer down at rest After no more than twelve 12 months unload all loaded magazines and replace the ammunition with fresh ammunition Clean and lubricate the weapon and magazines every twelve 12 months while in storage Store the weapon is a clean dry environment with regulated temperature controls 23 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
22. eeds NATO or S A A M l 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 e 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 E J Safe 2 Remove the magazine 3 Unload the UMP 4 Ensure that barrel cartridge chamber and receiver are free of obstructions 38 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 Cartridge not ignited Ammunition fault Recock UMP Dud round Firing pin damaged Take UMP to or broken maintenance shop Hammer spring damaged Take UMP to damaged or broken maintenance shop Bolt did not stay open on Cartridge case stuck in Unload Retract bolt to
23. enerate 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 su
24. ged one to to the maintenance shop Magazine catch defective Take UMP to maintenance shop 40 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 UMP SUBMACHINE GUN Fig 34 Length adjustment Fig 35 Place upper half onto shoulder over the hea
25. ht Front sight holder Front sight post Impact as with incorrectly Impact as with incorrectly centered front sight left centered front sight right Impact as with full sight Impact as with fine sight high low Fig 42 Sight pictures 46 SPECIFICATIONS Specifications UMP45 Caliber ranse qasuiedeureco s ERR ERD ERE RIO OH IR pea ed KR HES eR Selene E 45 ACP Operating principle iu xu osse x CR s Simple blow back firing from a closed bolt position Dimensions Overall length buttstock extended slele eese 690 mm 27 17 in Overall length with sound suppressor buttstock extended llus 860 mm 33 86 in Overall length buttstock folded llle 450 mm 17 72 in Overall length with sound suppressor buttstock folded 2 0 620 mm 24 41 in Overall width 2 52 nce te6stiumbhvssessirenu gue 4 WE Paves ee ka NUNG 63 5 mm 2 50 in Overall height with magazine lle II 326 mm 12 83 in Bare gd 5S eniro ear ELA Ee uelis esee iie 200 mm 7 87 in Twist length ie crak et mmus esent erg nfl Mea Se ER epe Grub rte eR ee beg 406 mm 15 98 in Sight radis esses pars I Ray eoe ER puer pec EU geen Ree exes 325 mm 12 80 in Weights UMP without magazine 0 00 e approximately 2 26 kg 4 93 Ib Magazine empty 25 rounds ono elu d cu Erga REOR VIR EE e 0 17 kg 38 Ib CIV Sees uos quatur vetere ee BERS Bu ee eh ER REMY Se EEE ROE 0 10 kg 22 Ib
26. l the required number of cartridges has been inserted or the magazine is full ps Fig 20 Filling the magazine ooa a 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 E A Fig 20 Filling the magazine using a magazine loader 18 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 EL 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 28 Remove magazine 19 UMP SUBMACHINE GUN Starting Situatio
27. 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 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 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 Fig 28 Fig 29 Pull out firing pin retaining pin Push locking catch to the right ee il 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 eee Assembly of the Bolt Place firing pin spring onto firing pin Insert firing pin spri
28. n 1 No magazine is present in the weapon The bolt is forward Put the UMP on IE 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 Flg 24 Pull cocking lever backwards 20 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 Flg 25 Depress bolt catch to rel
29. nd swivel it upwards Fig 32 Insert locking pin into the upper receiver to secure lower receiver Put the UMP on EJ 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 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
30. ng 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 31 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 liber
31. ng 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 Push firing pin forwards and firing pin 26 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 rE SE EIL IC ELSE X EMILE EIU LET CROCI UICE CLIE LUE PE ee 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 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 a
32. ny 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 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 e Any ammunition that exc
33. ppressed 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 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 sup
34. pressor attached The Aluminum Bruegger amp 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 SOUND SUPPRESSOR Generally the aluminum Bruegger amp Thomet UMP sound suppressors when used with the recommended
35. ral ways and ensures immediate readiness to fire from all carrying positions see pages 43 44 Fig 14 Carrying sling 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 amp 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 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 without a mounting rail with a short screw HANDLING amp 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 unti
36. ridge 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 e Carefully read this operators manual before handling the submachine gun e 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 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 guar
37. ris 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 f 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 CLEANING Normal cleaning Performed after
38. sual 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 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 g
39. 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 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 Unu
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