HK UMP/USC Series
Choose from an expansive selection of HK UMP and USC parts, such as HK UMP Barrels and HK USC Stocks, crafted for those who value reliability and performance. Upgrade with HK USC Handguards and HK UMP Triggers, and experience the difference in quality and craftsmanship.
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HKP HK UMP (9mm) Barrel - 3 lug - Threaded 1/2x28
HKP HK Parts
$299.959mm Threaded Barrel for HK UMP 9mmHKP-18639$299.95 -
HKP HK UMP .45 16 x 1 Left Hand Threaded Barrel
HKP HK Parts
$369.95HK UMP, Omega .45 Cal Threaded Barrel - 16 x 1 Left HandNew UMP .45Â 16.5" threaded barrel for the UMP or Omega firearms. Each barrel is threaded 16 x 1 LH.HKP-19395$369.95 -
HKP HK UMP, USC Lower Bolt Catch
HKP HK Parts
$22.95HK UMP & USC Bolt Catch For Last Round Hold OpenNew HK USA lower bolt catch.Compatibility: HK UMP HK USCHKP-19565$22.95 -
Strike Industries M-Lok & KeyMod Universal 7 Slot Rail Section - Red
Strike Industries
$25.95Strike Industries LINK attachment system takes the age old question Key-Mod vs. M-Lok and came up with the ultimate solution, a dual interface design compatible with both M-Lok and Key-Mod, same hardware with no need for additional parts. This Aluminum...HKP-19188$25.95 -
Ergo Sling Loop Rail Mount- Ambidextrous
Ergo
$29.95Ergo Sling Loop Rail Mount- Ambidextrous The ergonomic HK slide mount sling hook base provides an economical means for attaching an HK style sling hook to all 1913 Picatinny rails. Perfect for mounting on a tactical rail system or other picatinney...HKP-14526$29.95 -
H&K 30 Round HK UMP .40 Magazine - LEO Marked
H&K Heckler & Koch
$99.9530 Round Magazine - LEO Marked - New - UMP .40 S/W This magazine will fit all HK UMP .40 Caliber UMP's as well as the USC-UMP .40 caliber conversions. New factory fresh production HK magazine. The perfect option for those that like to collect LEO marked...HKP-20664$99.95 -
H&K UMP (.45 ACP) Magazine Follower
H&K Heckler & Koch
$14.95HK UMP .45 Magazine FollowerNew HK German factory UMP .45 magazine follower for all HK UMP .45 magazines. Fits all UMP 45 magazines both US or GermanHKP-16342$14.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Complete Recoil Rod Assembly
H&K Heckler & Koch
$79.95HK USC/UMP 45/40/9mm Recoil Spring/Rod Assembly New HK German. This is great to have as a spare as this is a repair and replacement item. Compatible with: HK UMP 45 HK USC 45 HK UMP 40 HK UMP 9mmHKP-00610$79.95 -
H&K UMP/USC/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Trigger
H&K Heckler & Koch
$19.95HK UMP, USC & G36 TriggerNew HK German factory trigger. A great spare or replacement part.Fits all: HK G36 HK UMP HK USCHKP-16495$19.95 -
H&K UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Index Plate Compression Spring
H&K Heckler & Koch
$7.95HK UMP, USC, G36, SL8 Compression Spring For Index Plate - German HKHKP-16496$7.95 -
HDPS HK UMP (.40 S&W/.45 ACP/9mm) Birdcage Flash Hider For Threaded Barrels 16X1 LH
HDPS
$137.95US made Bird Cage Flash HiderMade to fit threaded barrels 16 X 1 LH. HK no longer makes a flash hider for the UMP. This is the much anticipated HDPS bird cage style UMP flash hider.HDPS Flash Suppressor for All threaded barrels: HK UMP .45 ACP HK UMP ...HKP-02579$137.95 -
HK G36/UMP Folding Stock Release Spring
H&K Heckler & Koch
$9.95HK G36 Folding Stock Release Spring This is the spring that fits under the stock release button to activate the folding and retention of the G36 or UMP stock. Compatible with: HK G36 HK G36K HK G36C UMPHKP-00637$9.95 -
JMAC Universal HRD M-LOK Handstop
JMAC Customs
$49.95JMAC HRD M-LOK Handstop (H)and(R)etention(D)evice Compact, lightweight, & reversible. Features: M-Lok Compatible Fits in and across M-Lok Slots Includes mounting hadware 7075 T6 Aluminum Hard Coat Anodized The quarter-turn T-slot nuts have...HKP-21235$49.95 -
Solar Tactical HK UMP Kydex Grip Wrap - Black
Solar Tactical
$89.95Featureless Kydex grip wrap for use with detachable magazines. Prevents a wrap-around style pistol grip. Allows the use of the factory magazine release and detachable magazines over 10rds. Preban hi-capacity magazines can magazines can be used when...HKP-19142$89.95 -
HDPS HK UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Trigger
HDPS
$139.95HDPS US-Made Steel Trigger - USC & SL8 HDPS US-made triggers are ideal for meeting US 922r compliance as this counts as one of the needed parts when converting the HK USC to HK semi-auto UMP and the HK SL8 to semi-auto G36. Compatible...HKP-02134$139.95 -
Strike Industries QD & Sling Hook Sling Attachement
Strike Industries
$28.95Ambush QD Sling Loop The Strike Industries Ambush low profile sling loop is the lowest profile sling loop designed for the MIL-STD-1913 rail. Made of solid steel, its unique locking bar design system allows for it to be lightweight and durable. Because...HKP-17381$28.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch Spring
H&K Heckler & Koch
$8.95HK UMP & USC Bolt Catch Spring Compatible with: HK UMP HK USCHKP-01900$8.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Cocking Lever Spring
H&K Heckler & Koch
$8.95HK UMP & USC Cocking Lever Spring A great spare part to have on hand.HKP-01886$8.95 -
H&K UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Notched Disk - Safe/Fire
$8.95HK Ratched Wheel, Notched Disk G36, SL8 0,1 (Safe & Fire) OnlyFits all UMP, USC, G36 & SL8 Lowers That are 0,1 or S,F OnlyCompatibility: HK UMP HK USC HK G36 HK SL8HKP-19070$8.95 -
H&K UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Notched Disk - Safe/Semi
H&K Heckler & Koch
$12.95HK Ratched Wheel, Notched Disk G36, SL8 0,1 (Safe & Fire) OnlyFits all UMP, USC, G36 & SL8 Lowers That are 0,1 or S,F OnlyCompatibility: HK UMP HK USC HK G36 HK SL8HKP-16361$12.95 -
Out Of Stock
HKP HK UMP (.40 S&W/.45 ACP/9mm) Paddle Mag Release - Extended
HKP HK Parts
$24.95UMP Paddle Magazine Release - ExtendedBilleted alloy UMP magazine release. This is a very common repair & replacement part as they are fairly easy to break on the UMP lower. With this new metal mag release you get more surface area as well as a much...HKP-17919$24.95 -
Out Of Stock
HKP HK UMP, USC & G36, SL8 Sear
HKP HK Parts
$14.95HK Complete Sear G36, UMP, USC, SL8Made in the US.Compatibility HK UMP HK USC HK G36 HK SL8HKP-19555$14.95 -
Swiss Military Single Point Sling - OD Green - Used
$34.95Swiss Military Single Point Sling in OD Green - USEDHKP-19794$34.95 -
H&K G36/UMP (.40 S&W/.45 ACP/9mm/5.56/.223) F/A Hammer
H&K Heckler & Koch
$49.95G36 & HK UMP Hammer For Lower Or Trigger GroupHKP-02308$49.95 -
H&K German Leather Sling - Well Used with No Loop
H&K Heckler & Koch
$39.80Original Surplus German HK Leather - Well Used with No Loop Pulled from German military G3 rifles. Last of the remaining units, get them before they are gone. Can be used on many firearms: HK91, G3, PTR91 & CETMEHK93, 33, 53HK94, MP5HK clones...HKP-20583$39.80 -
H&K UMP (.40 S&W/.45 ACP/9mm) Firing Pin Retainer Pin
H&K Heckler & Koch
$7.95HK UMP Firing Pin - Retainter Pin This is the pin that trips the trip lever on the UMP lower.HKP-01894$7.95 -
H&K UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Sear
H&K Heckler & Koch
$19.95HK Complete Sear G36, UMP, USC & SL8 Genuine German Heckler & Koch part. Compatible with: HK UMP HK USC HK G36 HK SL8HKP-01850$19.95 -
HDPS HK UMP (.40 S&W/.45 ACP) 5 Prong Flash Suppressor
HDPS
$159.95This is the much anticipated HDPS 5 prong UMP flash hider- made to fit the flanged UMP barrels. Will fit factory HK UMP barrels as well as the UMP .45/ .40 US made barrels we currently offer. HK no longer makes a flash hider for the UMP...HKP-02368$159.95 -
Universal Bore Cleaning Brush - 9mm/10mm/.40 S&W
$13.95Universal Bore Cleaning Brush - 9mm/10mm/.40 S&W The HK combination brush was designed exclusively to clean the HK 9mm and 10mm fluted chamber and bore with one easy stroke. This brush has brass and stainless steel bristles.HKP-00917$13.95 -
H&K HK UMP & HK USC Extended Top Rail For Optics with Screws
H&K Heckler & Koch
$99.95This Rail Is Nearly An 1" Longer Than The Standard Length Top Rail. This Picatinny Top Rail Allows The User To Add An Eotech, Aimpoint, Acog, Etc. This Unit Is The Best Quality & Price Available. Includes the 2 mounting screws. Installs in seconds.HKP-20502$99.95 -
Out Of Stock
H&K MP5 40/10 Chamber Flute Brush
H&K Heckler & Koch
$29.95New HK German MP5 40, MP5 10mm Chamber Flute Brush This is a must-have brush to keep the flute clean and the firearm running the way it should. Get this item while you can, it is no longer in production and is hard to find. Compatible with: MP5 40 MP5...HKP-00139$29.95 -
H&K UMP (.40 S&W) Barrel - Used
H&K Heckler & Koch
$499.95HK German Used Factory UMP .40 S&W Barrel These are police department trade-in barrels in good shape and perfectly usable.HKP-00600$499.95 -
H&K UMP (.40 S&W/.45 ACP/9mm) Lower Bolt Carrier Guide
H&K Heckler & Koch
$12.95HK German All Steel UMP Carrier Guide.Fits all HK UMP lowers. This is the steel piece the guides the UMP bolt carrier.HKP-16500$12.95 -
H&K UMP (.45 ACP) 25 Round Magazine - German LEO Markings - Used
H&K Heckler & Koch
$149.95German HK UMP .45 25 Round Magazine - UsedUsed PD trade in HK German UMP .45 cal 25 Round Factory Magazines. These magazines will fit all UMP factory firearms as well as the USC's that have been converted to accept UMP magazines. Please Note: The UMP...HKP-17917$149.95 -
Out Of Stock
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Hammer Spring - Left
H&K Heckler & Koch
$0.00HK UMP & USC - Left Side Hammer Spring For All Lowers A high-wear item that needs to be changed when light firing pin strikes develop on your USC or UMP firearm. Compatible with: HK UMP models 45, .40, & 9mm. USC .45 and other conversion...HKP-01898$0.00 -
$49.95 -
HKP - HK UMP, USC - Flat Trigger - Bronze
HKP HK Parts
$99.95HKP - HK UMP, USC, - Flat Trigger With our new Flat trigger you will improve the aesthetics of your firearm and will also give shooters a lower position on the trigger, which will increase leverage for a smoother, more consistent pull. Our flat...HKP-21007$99.95 -
HKP HK UMP (9mm ) 15 Round Magazine
HKP HK Parts
$49.95UMP 9mm 15 Round Factory Magazine - USAUMP 15 round magazine for the UMP. Each magazine features steel feed lips, and a full 15 round magazine capacity. A small compact magazine for specific operational requirements. Each magazine counts as 3 U.S. Made...HKP-17849$49.95 -
Solar Tactical HK USC (.45 ACP) Kydex Grip Wrap
Solar Tactical
$79.95Kydex Grip Wrap - Ambidextrous - HK USCFeatureless Kydex grip wrap for use with detachable magazines. Prevents a wrap around style pistol grip. Allows the use of the factory magazine release and detachable magazines over 10rds. Preban hi-capacity...HKP-18890$79.95 -
Strike Industries M-Lok & Key Mod Universal Rail - 7 Slots
Strike Industries
$25.95Strike Industries LINK attachment system takes the age old question Key-Mod vs. M-Lok and came up with the ultimate solution, a dual interface design compatible with both M-Lok and Key-Mod, same hardware with no need for additional parts. This Aluminum...HKP-17594$25.95