The LBE Extreme Field Repair Kit comes with the following US Made Parts; (3) Firing Pin Retaining Pins, Firing Pin, (2) Takedown Detents, Disconnector Spring, Extractor O-Ring, Extractor Spring, (2) Hammer/Trigger Pins, Gas Tube Roll Pin, Extractor Pin, Bolt Catch Spring, Front Sight Detent Spring, Extractor, Buffer Retainer Spring, Ejector Roll Pin, Trigger Guard Roll Pin, Takedown Pin, Pivot Pin, Safety Selector Detent, (3) Bolt Gas Rings, Disconnector, Bolt Catch Roll Pin, Trigger Spring, Hammer Spring, Ejection Port Cover Spring, (2) Takedown Detent Springs, (2) Selector Detent Springs, and a Mag Catch Spring