HK German USC & UMP Firing Pin Assembly CompleteNew HK German UMP & USC Firing Pin Assembly. A Great Spare To Have On Hand As This Item Is A Hard To Find Replacement Part. Fits All Calibers Of UMP's & USC's.
- USC 45
- UMP 45
- UMP 40
- UMP 9mm
- ALL USC Conversions
- ALL UMP MG's