FEATURES:
5KU WA M4 Reinforced Spring & Pin Set.
Made by aluminum material.
Reinforced Spring & Pin Set for G&P WOC / WA M4/M16 Series GBB.
Included: Trigger Spring, Magazine Catch Spring, Sear Spring, Hammer Lock Spring & Selector Spring, Trigger Pin, Hammer Lock Pin, Selector Pin & Hammer Lock Shim.