H&K Heckler & Koch

HK UMP & USC Right Side Hammer Spring For Lowers

HK Heckler and Koch Factory German Side or Bottom Rail with Screws HK USC and HK UMP Up to three sides can be used - two for the sides and one for the bottom. Best quality and price available...

HK German Hand Stop Screw     #21 Cylindrical screw, handstop 5 x 16 mm 219414

HK UMP & USC Lower Axle - German 3 X lower axle pins are used for each trigger group or lower all pins are the same size, except the mag release axle on the USC model. 

HK UMP & USC Lower Axle Pin - US 3 lower axle pins are used for each trigger group or lower all the same size with the exception of the mag release axle on the USC.

HK Heckler and Koch Lower Housing with a Navy Grip in USED condition for HK UMP and HK USC Priced for ONE Navy Lower Housing ONLY - Each unit Sold INDIVIDUALLY ONLY 4 UNITS AVAILABLE -...

HK German UMP Lower Locking Pin For use with all HK UMP lowers and USC to UMP conversions. New HK German manufacture.  

HK German Factory .45 Magazine Loader for HK USC and HK UMP Fits all HK German UMP .45 25-round magazines as well as the USC 10-round factory magazines. A great addition for your range time and to...

HK UMP & USC Magazine Release Spring HK German factory mag release spring for all USC and UMP mag releases.  Compatible With:  USC lowers UMP lowers

HK Heckler and Koch Complete Rear Sight for USC and UMP  Includes: Leaf spring  Rear sight  Compression spring for rear sight  Windage adjustment screw  Rear sight...

HK Heckler and Koch Incomplete Rear Sight for USC and UMP  Includes: Rear Sight ONLY Compatible With: USC UMP

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...