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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Out Of Stock
MLOK LINK Rail Section - 7 Slots - QD
Strike Industries
$25.95Strike Industries M-LOK & Key Mod Universal Rail - 7 Slots Strike Industries LINK attachment system takes the age old question Key-Mod vs. M-LOK and came up with the ultimate solution, a dual...HKP-17594$25.95 -
HK USC, SL8 Hammer
H&K Heckler & Koch
$98.95H&K USC/SL8 (.45 ACP/5.56/.223) Hammer Compatible With: HK USC .45 ACP HK SL8 .223/5.56HKP-16352$98.95 -
Arm Brace Hook
MI Midwest Industries
$97.95Midwest Industries Arm Brace Hook The Arm Brace Hook is designed for pistols that use a 1.2" diameter buffer tube. It provides a secure and stable point of contact while offering a built-in,...HKP-22417$97.95 -
On Sale
HK UMP 45 Magazine Spring - .45 ACP - 15 Round - US
HKP HK Parts
Now: $6.34Was: $9.95HK UMP .45 15 Round Magazine Spring Perfect for spares and to have on hand as these are consumable item that needs to be replaced from time to time. A must have item if you own a USC/UMP conversion...HKP-20679Now: $6.34Was: $9.95 -
Out Of Stock
Picatinny Vertical Fixed Unigrip
B&T Brugger & Thomet
$119.00B&T Brugger and Thomet Vertical Fixed Unigrip for Swiss made B&T vertical forend grip for picatinny. Made of aluminum Will fit all mil-spec picatinny rails. Measures long. Specifications:HKP-18043$119.00 -
HK UMP, USC Front Sight - Omega
OMEGA
$9.95Omega UMP And USC Front Sight Front sight for HK UMP and HK USC Compatible With: UMP USCHKP-22513$9.95 -
WOOX M-LOK Rail Covers - Checkered - GEN2
WOOX
$38.95 - $48.95WOOX Checkered GEN2 HK Rifle, SMG M-LOK Rail Covers The checkered GEN2 M-LOK rail covers upgrade any M-LOK or KeyMod handguard with a warmer feel, more traction, and added heat protection. The...HKP-22463-M$38.95 - $48.95 -
Rail Panel Cover - M-LOK - 3 Slot
JMK
$18.95 - $23.95JMK Rail Panel Cover - M-LOK - 3 Slot JMK M-LOK rail panels are compatible with platforms featuring M-LOK slots. These modular panels are suited for numerous applications. Each panel is sold...HKP-22403-M$18.95 - $23.95 -
HK USC to UMP Conversion ACR Stock Block
$139.95HK USC To ACR Stock Adapter A new product that allows you to add the widely popular Remington ACR folding, adjustable stock to your USC-UMP conversion. This offering is for the stock block and...HKP-17357$139.95 -
HK UMP, USC Hammer Spring - Left
H&K Heckler & Koch
$13.95Heckler and Koch Left Side Hammer Spring for All HK UMP and HK USC Lowers A high-wear item that needs to be changed when light firing pin strikes develop on your USC or UMP firearm.HKP-01898$13.95 -
WOOX Edge Stock - Walnut - Picatinny Mount
WOOX
$228.95 - $298.95WOOX Edge Stock - Walnut The WOOX Edge Stock is a premium upgrade for rifles and SMGs featuring a 3 Picatinny stock interface. It blends a precision-machined aluminum body with an American walnut...HKP-22460-M$228.95 - $298.95 -
HK UMP Flash Hider - 5 Prong - .40 S&W, .45 ACP
B&T Brugger & Thomet
$129.95B&T Brugger and Thomet 5 Prong Flash Hider .40 S&W and .45 ACP for HK UMP Each flash hider includes the proper quick detach system to take the flash hider on and off. Each flash hider features a 5...HKP-16891$129.95