HK UMP/USC Triggers / Packs / Housings
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H&K UMP (.40 S&W/.45 ACP/9mm) Safe/Semi Lower - 2 Position
HKP HK Parts
$495.99New HK Parts -UMP Safe, Semi FBI (0,1) Lower Each lower comes complete with 2 position settings (S, F) and all the internals. This item is ideal for the USC to UMP conversion or to keep as a spare. Compatible With: UMP .45 UMP .40 UMP 9mm USC...HKP-00590$495.99 -
HKP HK UMP 2 Position Lower Grip Frame - FDE
HKP HK Parts
$149.95UMP - 2 Position Lower Grip Frame - FDE New UMP Lower. 2 position settings (S,F). Perfect for all your own internals. This item is ideal for the USC to UMP conversion or to keep as a spare. Compatible With: UMP .45 UMP .40 UMP 9mm USC conversions (NFA...HKP-19384$149.95 -
HKP HK UMP, G36 Selector Lever
HKP HK Parts
$8.95HK UMP & G36 Left Side Safety Selector Lever With Axle - Replacement selector for HK PARTS TRIGGER GROUP HK Parts selector lever for the left side of our own 2 position FBI U.S housing for the UMP pictogram lowers. Compatible With: U.S FBI 2...HKP-20180$8.95 -
H&K UMP/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Sear Spring
H&K Heckler & Koch
$8.95HK UMP, USC, G36, & SL8 Sear Spring This part is used in conjunction with the sear in the trigger body of the lower.HKP-01866$8.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Lower Axle
H&K Heckler & Koch
$9.95HK UMP & USC Lower Axle - German 3 X lower axle pins are used for each trigger group or lower all pins are the same size, except the mag release axle on the USC model.HKP-01893$9.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Ejector Lever
H&K Heckler & Koch
$39.95HK German UMP & USC Ejector Lever - German New HK German OEM part. Each unit fits all calibers of UMP & USC firearms. A great spare to have on hand as they are prone to shearing off with use and must be replaced. Compatible With: UMP .45 UMP ...HKP-00263$39.95 -
HKP HK UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Sear
HKP HK Parts
$49.95Sear For The HK UMP, USC, G36, & SL8 - USA CNC machined from aircraft grade aluminum that is hard coat anodized that will last much longer than the factory HK part that's made with plastic. This part counts as 1 US-made 922r compliant part. 100% USA...HKP-01847$49.95 -
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 -
H&K HK UMP, HK USC Lower Axle
H&K Heckler & Koch
$9.95HK UMP & USC Lower Axle Pin - US 3 lower axle pins are used for each trigger group or lower all the same size with the exception of the mag release axle on the USC.HKP-19383$9.95 -
H&K UMP (.40 S&W/.45 ACP/9mm) Lower Release Lever For Hammer
H&K Heckler & Koch
$9.95HK UMP Catch Release Lever Or Trip Lever For All UMP LowersHKP-01890$9.95 -
GSG9 HK G36/UMP/SL8/USC Hammer
GSG9
$124.95G36 & HK UMP Hammer For Lower Or Trigger Group- US Made These hammers are a direct fit on the USC and SL8 platform.HKP-19852$124.95 -
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 -
On Sale
HKP HK UMP G36 Curved Trigger
HKP HK Parts
Now: $79.95Was: $99.95HKP HK UMP & USC - Curved Trigger With our new curved trigger, you will improve the aesthetics of your firearm. Our curved trigger has spaced-out serrations at the face of the trigger for a far superior grip. Each trigger counts as one US-made...HKP-21126-MNow: $79.95Was: $99.95 -
H&K UMP/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Trigger Spring
H&K Heckler & Koch
$9.95H&K UMP/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Trigger Spring Trigger Spring For All HK UMP & G36 LowersHKP-01864$9.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) 3 Position Navy Full Lower (0,1,)
H&K Heckler & Koch
$1,249.95HK UMP 3 Position Navy Lower New German Heckler & Koch UMP 3 position (0, 1, full) Navy lower. Each lower comes complete with all the factory internals. These lowers are ideal for the USC to UMP conversion and to keep as a spare. Each lower is...HKP-00592$1,249.95 -
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 -
Out Of Stock
HKP HK UMP 2 Position Lower Grip Frame - Black
HKP HK Parts
$179.95UMP - 2 Position Lower Grip FrameNew UMP Lower. 2 position settings (S,F). Perfect for all your own internals. This item is ideal for the USC to UMP conversion or to keep as a spare. Each lower fits & works with the 45, 40 & 9mm calibers using...HKP-19382$179.95 -
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) Only Compatible With: HK UMP HK USC HK G36 HK SL8 (0,1 or S,F only)HKP-19070$8.95 -
HK UMP, USC Right Hammer Spring
USA
$9.95HK UMP & USC Right Side Hammer Spring For Lowers - USAHKP-19557$9.95 -
H&K UMP/USC/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Trigger
H&K Heckler & Koch
$19.95HK UMP, USC & G36 Trigger New HK German factory trigger. A great spare or replacement part. Compatible With: HK G36 HK UMP HK USCHKP-16495$19.95 -
H&K UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Notched Disk - Safe/Semi
H&K Heckler & Koch
$14.95HK Ratched Wheel, Notched Disk G36, SL8 0,1 (Safe & Fire) Only Compatible With: 0,1 or S,F only: HK UMP HK USC HK G36 HK SL8HKP-16361$14.95 -
HK G36/SL8/USC/UMP Rear Sight Screw
H&K Heckler & Koch
$19.95HK G36, SL8 & USC, UMP Rear Sight Screw Rear sight screw to retain HK G38/Sl8 & USC/UMP rear sights housings to the rear sight base. Compatible With: G36, SL8 USC, UMPHKP-16382$19.95 -
H&K USC (.45 ACP) Lower Locking Lever Axle
H&K Heckler & Koch
$8.95HK USC Lower Locking Lever Axle A great item to have on hand as spares. New German HK. Compatible With: All USC lowersHKP-16376$8.95 -
Out Of Stock
H&K HK G36, HK UMP, HK USC, HK SL8 Lower Compression Spring
H&K Heckler & Koch
$7.95HK G36, SL8, USC, & UMP Compression Spring For Index Plate - LowerHKP-01865$7.95 -
Out Of Stock
HKP HK UMP, USC & G36, SL8 Sear
HKP HK Parts
$14.95HK Complete Sear G36, UMP, USC, SL8 Made in the USA Compatible With: HK UMP HK USC HK G36 HK SL8HKP-19555$14.95 -
H&K USC/SL8 (.45 ACP/5.56/.223) Hammer
H&K Heckler & Koch
$94.95H&K USC/SL8 (.45 ACP/5.56/.223) HammerHKP-16352$94.95 -
H&K Trigger Pack Housing - Semi 0,1
H&K Heckler & Koch
$129.95H&K 2 Position (0,1) Semi-Auto Trigger Pack Housing This trigger pack housing is professionally converted to semi-auto with all legal and correct modifications, including a semi-sear hole and trigger stop. It is designed to provide reliable...HKP-02177$129.95 -
Out Of Stock
H&K UMP/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Notched Disk - 3 Position
H&K Heckler & Koch
$0.00HK Ratched Wheel Notched Disk For 3 Position Lowers Compatible With: HK G36 HK UMPHKP-01854$0.00 -
Out Of Stock
H&K USC (.45 ACP) Lower Trigger Group - Used
H&K Heckler & Koch
$0.00HK German USC Lower Receiver - Complete - Used Includes all internal semi-auto stock USC trigger internals for a complete lower trigger group. Great spare for or the complete needed parts for doing a USC-UMP grease gun conversion or all German USC-UMP...HKP-18947$0.00 -
H&K USC (.45 ACP) Incomplete Trigger Housing - Grey
H&K Heckler & Koch
$69.95H&K USC .45 ACP 2 Position (0,1 Pictogram) Incomplete Trigger Housing - Grey Enhance your H&K USC .45 ACP with this high-quality incomplete trigger housing in grey. This housing is designed to provide a reliable upgrade to your USC platform,...HKP-16357$69.95 -
H&K USC (.45 ACP) Incomplete Trigger Housing - Used
H&K Heckler & Koch
$39.95H&K USC (.45 ACP) Incomplete Trigger Housing - Used Used HK German USC Lower Receiver Empty. German HK perfect for spare parts. You can choose gray or black. We have both types 1. Please be sure to make a note of which color you want when checking...HKP-16479$39.95 -
Out Of Stock
H&K UMP (.40 S&W/.45 ACP/9mm) 4 Position Burst Lower (0,1,2,Full)
H&K Heckler & Koch
$0.00New HK German 4 Position (0,1,2,Full) Burst LowerFits All HK UMP's. This item can be adapted for use on the USC-UMP Conversion if the F/A internals are removed & the USC (semi-auto) internals are installed. This item is a very popular item for the...HKP-00593$0.00 -
Out Of Stock
H&K UMP (.40 S&W/.45 ACP/9mm) Incomplete Pistol Grip (0,1)
H&K Heckler & Koch
$0.00UMP Pistol Grip Stripped & Incomplete - 2 Position (0,1) Pictogram New HK German manufacture, rare and hard to find. If you have an HK USC you can use this housing with the USC lower internals for a complete USC to UMP lower assembly that you can use...HKP-17815$0.00 -
Out Of Stock
H&K UMP/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Burst Lower Slide (0,1,2)
H&K Heckler & Koch
$14.95HK G36 & UMP Slide For 3 Position Burst Only Lowers - 0,1,2 Only Compatible With: HK UMP HK G36HKP-01887$14.95 -
Out Of Stock
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Hammer Spring - Right
H&K Heckler & Koch
$14.95HK UMP & USC Right Side Hammer Spring For LowersHKP-01892$14.95 -
Out Of Stock
HK UMP/USC (.40 S&W) Extractor
$39.95New US-Made USC Or UMP .40 Extractor This part is a repair and replacement item, as these are prone to breakage, and it's a part that's hard to find and a great item to have on hand. Please Note: HK considers this a high wear and replacement...HKP-02624$39.95 -
Out Of Stock
HK UMP/USC (.40 S&W/.45 ACP/9mm) Ejector Lever
$34.95HK UMP, USC Ejector Lever A great spare to have on hand as they are prone to shearing off with use and must be replaced. Perfect for the Omega and Tommy Built Tactical builds. Compatible With: UMP .45 UMP .40 UMP 9mm USC .45 and all caliber of...HKP-18508$34.95