HK UMP, USC – Left Side Hammer Spring For All Lowers

New HK German 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.

Fits all

  • HK UMP models 45, .40 & 9mm
  • USC .45 and other conversion models

Heckler & Koch, Hammer Spring Left, Fits HK USC/UMP Rifle

  • Brand: Heckler & Koch
  • Product Code: HKP-01898
  • Availability: Out Of Stock
  • $23.99 USD