UMP / USC Small Parts

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

HK UMP Release Lever Spring For All UMP Lowers  

HK UMP Firing Pin - Retainter Pin   This is the pin that trips the trip lever on the UMP lower.   Compatible With: HK UMP  

USA HK UMP Left Hammer Spring New U.S hammer spring- left side 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 models 45, .40 & 9mm USC .45 and other...

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

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

HKP HK UMP Floor Plate Compatible With: UMP .45 UMP .40 UMP 9mm These can become cracked or broken with use or drops onto hard surfaces. Made in the USA and counts as 1 US compliant part.

HK German USC Magazine Release Axle This is a great replacement as they are prone to breakage and wear. These are also a missing part in some states where bullet buttons are required. This part is compatible with all HK USC...

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

HK USC Lower Locking Lever Axle A great item to have on hand as spares. New German HK. Compatible With: All USC lowers

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

HK UMP & USC Right Side Hammer Spring For Lowers