UMP / USC Series

HK UMP & USC Bolt Catch For Last Round Hold Open New HK USA lower bolt catch. Compatible With: HK UMP HK USC

Ergo M-LOK QD Sling Mount   Compatible with any firearm featuring M-LOK attachment points.

Buttstock Allen Screw For HK USC Or HK SL8 rifles. This is the screw that holds the stock assembly onto the upper receiver of the HK USC & SL8.Great for replacements or to have as spares. This item is factory HK and a common spare.

Hand Stop Complete - USA - UMP, USC & G36 Compatible With: USC UMP G36K G36C

HK UMP, USC & G36 Trigger New HK German factory trigger. A great spare or replacement part. Compatible With: HK G36 HK UMP HK USC

H&K USC (.45 ACP) 10 Round Factory Magazine Spring Compatible With: HK USC 10 Round magazines

B&T Unigrip QD with Bipod This B&T foregrip features a retractable bipod for superior weapon stability in both the standing and prone positions. Specifications: Condition: Factory new Material: Polymer/alloy Heat deflection temperature:...

30 Round Magazine – Used – UMP .40 S/W This magazine will fit all HK UMP .40 caliber UMP’s as well as the USC-UMP .40 caliber conversions. Used factory HK magazine. Compatible With: HK UMP .40 HK USC-UMP conversions LWRC SMG.40

New HK German 2 Position Lower Complete New German Heckler & Koch UMP Lower. 2 position settings (S,F). Each lower comes complete with all the factory internals. This item is ideal for the USC to UMP conversion or to keep as a spare.  Compatible...

HDPS .45 ACP 5 Prong Flash Hider - Threaded 16x1 LH The 5 Prong Flash Hider is designed to fit .45 ACP firearms threaded 16x1 LH This highly anticipated flash suppressor enhances accuracy by up to 35% and reduces recoil by up to 40%. With no indexing...

HK UMP & USC Bolt Catch Spring Compatible With: HK UMP HK USC

HKP HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B Sling Pin The original thumb screw version for all stock block B's.