H&K Heckler & Koch

HK German UMP Rear Stock Axle Pin This is the HK factory German stock pin that allows you to attach the stock to either the factory receiver of a UMP or for those that are doing the USC to UMP...

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.

HK UMP & USC Cocking Lever Support Tube  

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

New 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...

HK German USC & UMP Firing Pin Assembly Complete A great spare to have on hand as this item is a hard-to-find replacement part. Compatible With: USC 45 UMP 45 UMP 40 UMP 9mm ALL USC...

H&K UMP/USC (.40 S&W/.45 ACP/9mm) Firing Pin Spring This is a common wear and breakage item. This item also frequently becomes lost by end users when field stripping the UMP and USC Bolts...

New HK German Factory USC/UMP Front Sight This is a common wear or breakage part. This part is easy to swap out by just knocking out the roll pin, replacing it, and then re-inserting the roll pin...

HK UMP & USC - Left Side Hammer Spring For All Lowers A high-wear item that needs to be changed when light firing pin strikes develop on your USC or UMP firearm. Compatible With:  HK UMP...

HK UMP & USC Right Side Hammer Spring For Lowers