Luth-AR Gunsmith Kit - For AR-15 - Includes Buffer Retainer (10) - Buffer Retainer Spring (10) - Bolt Catch Spring (5) - Bolt Catch Buffer (5) - Bolt Catch Roll Pin (5) - Detent Spring (20) - Takedown Detent (20) - Front Pivot Pin (5) - Disconnector (5) - Trigger Spring (5) - Pistol Grip Screw (3) - Pistol Grip Screw Washer (3) - Selector/Ejector Spring (10) - Selector Detent (10) - Hammer/Trigger