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/USC (.40 S&W/.45 ACP/9mm) QD Sling Pin for Stock Block B
HKP HK Parts
$74.95Quick Detach Sling Pin for Stock Block B - USC, UMP This Ambidextrous QD Sling Pin allows you to replace your Push Pin Style or Eyelet Sling Loop - Style Pin in your Stock Block B for use of a QD Sling.HKP-18776$74.95 -
Strike Industries M-LOK & KeyMod Universal 7 Slot Rail Section - Red
Strike Industries
$25.95Strike Industries M-LOK & KeyMod Universal 7 Slot Rail Section - Red Strike 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...HKP-19188$25.95 -
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 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Lower Locking Pin
H&K Heckler & Koch
$36.95HK German UMP Lower Locking Pin For use with all HK UMP lowers and USC to UMP conversions. New HK German manufacture.HKP-00595$36.95 -
H&K 45mm Picatinny Rail Cover - Black
H&K Heckler & Koch
$14.95HK Rubber Picatinny Rail Cover - 45mm New Factory HK Rubberized Picatinny Rail Cover Specifications: Rail cover dimensions: 45x26x7 mmHKP-18857$14.95 -
H&K Bungee Single Point Sling - 1600mm Long
H&K Heckler & Koch
$129.95H&K Bungee Single Point Sling - 1600mm Long New factory HK German manufactured single point elastic "push/pull" bungee style sling. Includes the factory sling hook and is fully adjustable for the average sized mag to use. Will fit any HK application...HKP-18182$129.95 -
H&K UMP (.40 S&W/.45 ACP/9mm) Magazine Release Axle
H&K Heckler & Koch
$19.95HK UMP Magazine Release AxleHKP-02159$19.95 -
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 -
Surefire 12-Pack 123A Batteries
Surefire
$29.95Surefire 12-Pack 123A Batteries Made in the USA and the "gold standard" in battery performance. These are the best performance, longest lasting 123 batteries available. The price is for a box of 12 new batteries. Ideal for use with lasers, lights,...HKP-02711$29.95 -
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 -
Strike Industries Link Anchor Poly Handstop
Strike Industries
$19.95Strike Industries Link Anchor Poly Handstop The LINK Anchor Handstop is made from a heat-resistant polymer that allows comfortable grip in any shooting condition. It has a low profile design that allows mounting through any MLOK or KeyMod openings. The...HKP-19645$19.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Cocking Handle Pin
H&K Heckler & Koch
$7.95HK UMP & USC Cocking Handle Pin Compatible With: HK UMP HK USCHKP-01885$7.95 -
HK UMP (.40 S&W/.45 ACP/9mm) Gunsmithing Bench Mat
HKP HK Parts
$24.95HK UMP, USC Bench Mat, Gunsmithing Mat Our HK USC & UMP bench mat is the perfect cleaning & repair mat designed specifically for your Heckler & Koch models. Have fun and learn while you work on your favorite H&K firearm. The soft top...hkp-17617$24.95 -
H&K HK UMP & HK USC Extended Top Rail For Optics with Screws
H&K Heckler & Koch
$99.95H&K HK UMP & HK USC Extended Top Rail For Optics with Screws This 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 &...HKP-20502$99.95 -
JMAC Universal M-LOK Skeleton Forward Grip
JMAC Customs
$89.95JMAC Universal M-LOK Skeleton Forward Grip Can be used as a forward grip or a handstop! Features: Reversible and Lightweight M-LOK Compatible (Requires 2 slots) Fits in and across M-LOK Slots Includes mounting hardware 7075 T6 Aluminum Hard Coat...HKP-21240$89.95 -
Omega HK UMP .45 ACP Barrel - 3-Lug
OMEGA
$449.95Omega HK UMP .45 ACP Barrel - 3-Lug This is the newest barrel for the UMP to hit the market that will come with a removable 3-lug adapter. The 3-lug adapter will be the same spec as the MP5 3 lug, making your UMP more versatile when it comes down to...HKP-21070$449.95 -
H&K UMP/USC (.45 ACP) Extractor
H&K Heckler & Koch
$49.95New USC & UMP .45 Extractor - German Compatible with both the USC & UMP. Perfect for spares as they are prone to breakage and are a common wear item. Please Note: HK considers this a high wear and replacement item. Once it is removed from the...HKP-00265$49.95 -
USA HK UMP/USC .45 Semi Auto Bolt Carrier - Complete
USA
$399.95USA HK UMP/USC .45 Semi Auto Bolt Carrier - Complete Replacement part for USC to UMP conversions. Marked .45 semi auto just like the OEM carrier. Includes: Extractor Firing Pin Firing Pin Spring Firing Pin Retaining Pin Compatible With: HK UMP ...HKP-18588$399.95 -
Bore Boss Pull-Through Bore Cleaner - .357/9mm/.38
Bore Boss
$10.95Real Avid Bore Boss Pull-Through Bore Cleaner - .357/9mm/.38 From the barrel of innovation comes the ultra-compact Bore Boss, the first-ever self-storing, easy-feeding, clean-pulling, field-ready, hassle-free, pure-genius bore cleaner. The single-piece...HKP-19400$10.95 -
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 -
HKP .45 ACP 4 Prong Pistol Flash Hider - Threaded .578x28 RH
USA
$74.95HKP .45 ACP 4 Prong Pistol Flash Hider - Threaded .578x28 RH This flash hider adds a neat look & feel that provides outstanding flash hiding capabilities. Perfect for adding a unique look to your .45 ACP. Made in the USA, each flash hider is made of...HKP-02188$74.95 -
HKP HK UMP (9mm ) 15 Round Magazine
HKP HK Parts
$49.95UMP 9mm 15 Round Factory Magazine - USA UMP 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 -
HKP HK UMP, USC Lower Bolt Catch
HKP HK Parts
$22.95HK UMP & USC Bolt Catch For Last Round Hold Open New HK USA lower bolt catch. Compatible With: HK UMP HK USCHKP-19565$22.95 -
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 -
Out Of Stock
Solar Tactical HK USC (.45 ACP) Kydex Grip Wrap
Solar Tactical
$79.95Kydex Grip Wrap - Ambidextrous - HK USC Featureless 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 10 rounds. Preban hi-capacity...HKP-18890$79.95 -
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 -
HKP .45 ACP - 4 Prong Flash Hider - Threaded 16x1 LH
HKP HK Parts
$79.95HKP .45 ACP 4 Prong Flash Hider - Threaded 16x1 LH Crafted from solid titanium, this tactical thread protector fits all HK45 full-size and compact barrels threaded 16x1 LH. Essential for safeguarding your threaded barrels and exposed threads, it...HKP-01018$79.95 -
Out Of Stock
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 Cable Gun Lock
H&K Heckler & Koch
$19.95HK Cable Gun Lock This is the same lock that ships with factory HK firearms.HKP-02442$19.95 -
HKP .45 ACP Thread Protector - Threaded .578x28 RH
HKP HK Parts
$14.95HKP .45 ACP Thread Protector - Threaded .578x28 RH The new US-made .45 ACP tactical thread protector, the cap fits all HK45 full size & compact barrels threaded .578x28 RH thread. A must-have item to protect your threaded barrels, exposed threads...HKP-17623$14.95 -
Michaels Machines USC to UMP Stock Block B w/Thumbscrew
Michaels Machines
$249.95Michaels Machines USC to UMP Stock Block B w/Thumbscrew For use with all HK UMP factory or US made folding stocks. Each unit comes with a thumbscrew on one end and a slotted section on the other end. This is a required part for the HK USC-UMP...HKP-20722$249.95 -
H&K UMP (.40 S&W/.45 ACP/9mm) Release Lever Spring
H&K Heckler & Koch
$9.95HK UMP Release Lever Spring For All UMP LowersHKP-01891$9.95 -
Out Of Stock
H&K UMP/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Safety Selector Lever (0,1,F)
H&K Heckler & Koch
$19.95HK UMP & G36 Left Side Safety Selector Lever With Axle - 3 Position Navy Compatible With All Navy 3 Position Lowers (0,1,F): HK UMP HK G36HKP-01889$19.95 -
HKP HK UMP Floor Plate - Black
HKP HK Parts
$9.95HKP HK UMP Floor Plate - Black Compatible With: UMP .45 UMP .40 UMP 9mm These can become cracked or broken with use or drops onto hard surfaces. Made in the USA and counts as 1 US compliant part.HKP-17161$9.95 -
H&K UMP (9mm) Extractor
H&K Heckler & Koch
$60.95New HK German USC/UMP 9mm Extractor This is the perfect spare part to have for your UMP or USC 9mm conversion. Hard to find and only available here at HKPARTS.HKP-00266$60.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Cocking Lever
H&K Heckler & Koch
$24.95HK UMP & USC Cocking Lever New HK German part. Compatible With: HK UMP HK USCHKP-01884$24.95 -
H&K USC/SL8 (.45 ACP/5.56/.223) Left Selector Lever
H&K Heckler & Koch
$11.95H&K USC/SL8 (.45 ACP/5.56/.223) Left Selector Lever HK German USC, SL8 left side selector lever 2 position 0,1 Safe, Semi only. Compatible With: HK SL8 HK USCHKP-02506$11.95