Presma 31 Piece AR-15 Lower Parts Kit with FCG, for .223/5.56 AR15/M4, Black, LPK02

223/5.56 AR15/M4 includes pistol grip trigger and hammer. Kit includes: Bolt catch 1 Bolt catch plunger 1 Bolt catch roll pin 1 Bolt Catch Spring 1 Buffer Retainer Pin 1 Buffer Retainer Spring 1 Detent Spring 2 Disconnector 1 Disconnector Spring 1 Pistol Grip 1 Hammer 1 Hammer pin 1 Hammer Spring...