M4 (T.Marui) GBB Hammer, Sear, Fire pin springs #50 #52x2 #54

This hammer, sear, fire pin spring set fits T.Marui M4 series gbb.  All springs are made of piano steel wire.  It includes parts No.:50, 52x2 & 54. All products are made for airsoft only.  They are not made for real steel firearms.