UMP / USC Receivers / Uppers

UMP Paddle Magazine Release This is a common repair and replacement part as they are easy to break on the UMP lower. Simple and easy to install with no gunsmith needed or required. Compatible With:  UMP .45 UMP .40 UMP 9mm Please Note: This...

HK German USC & UMP Recoil Buffer Replaceable spare lower housing or buffer for buffer housings. This is a high wear and replacement item and a must-have for spare parts. Compatible With: HK USC .45 HK UMP models

HK UMP & USC Cocking Handle Pin Compatible With: HK UMP HK USC

HK UMP & USC Cocking Lever New HK German part. Compatible With: HK UMP HK USC

HK UMP & USC Cocking Lever Spring A great spare part to have on hand.

H&K USC (.45 ACP) Carbine Mag Release This is a great replacement as they are prone to breakage & wear. Please Note: For those that have a USC with a bullet button and are moving to a free state and want to revert back to the...

HK UMP & USC Cocking Lever Support Tube  

HK UMP & USC Right Side Hammer Spring For Lowers - USA

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

HKP Cocking Handle Assembly for HK USC, UMP Complete cocking handle assembly for HK USC and HK UMP platforms. US-made and built to factory-spec dimensions and includes all required components for proper function and replacement. Includes: Steel cocking...

H&K UMP (.40 S&W/.45 ACP/9mm) Lower Backplate HK German Backplate for all UMP lowers. You will need to add your existing buffer or order one to make a complete buffer assembly.

HK USC & UMP Slide For Lower - German New HK German USC slide for conversion of UMP lower.