Includes: Trigger, Trigger Spring, Trigger/Hammer Pin (2), Hammer, Hammer Spring, Disconnector, Disconnector Spring, Selector, Selector Spring, Detent Selector, Bolt Catch, Bolt Catch Spring, Bolt Catch Button, Bolt Catch Roll Pin, Front Pivot Pin, Rear Take Down Pin, Take Down Detent (2), Take Down Detent Spring (2), Magazine Catch Spring, Magazine Catch Button, Magazine Catch, Triggerguard, Triggerguard Roll Pin, Buffer Retainer Pin, Buffer Retainer Spring, Pistol Grip, Pistol Grip Screw, Pistol Grip Lock Washer