The Lower Parts Kit for AM-15 Minus the Pistol Grip. This Kit includes the following: Bolt Catch, Bolt Catch Plunger, Bolt Catch Roll Pin, Bolt Catch Spring, Buffer, Retainer, Buffer Retainer Spring, Disconnect, Disconnect Spring, Hammer, Hammer Pin, Hammer Spring, Magazine Catch, Magazine Catch Button, Magazine, Catch Spring, Pivot Pin, Pivot Pin Detent, Pivot Pin Detent Spring, Selector, Selector Detent, Selector Detent Spring, Takedown Pin, Takedown Pin Detent, Takedown Pin, Detent Spring,...