Includes: - Pistol Grip - Trigger - Hammer - Disconnector - Selector - Bolt Catch Spring - Detent Spring - Bolt Catch Button - Take Down Detent - Bolt Catch - Magazine Catch Spring - Bolt Catch Roll Pin - Magazine Catch Button - Magazine Catch - Front Pivot Pin - Hammer Spring - Trigger Spring - Pistol Grip Screw - Pistol Grip Lock Washer - Selector Spring - Detent Selector - Hammer Pin - Trigger Pin - Take Down Pin - Buffer Retainer Pin - Buffer Retainer Spring - Disconnector Spring