AR-15 Ultimate Repair Kit. Every spring, pin or part needed to keep your rifle in the fight. Compete set to replace virtually any part subject to wear or loss. Very required for any AR-15 owner. Parts are packed in display blaster pack. Kit includes: A15 Disconnector, Front Pivot Pin, Takedown Pin, Extractor, Gas Rings (3), Firing Pin Retaining Pin (3), Detent (Selector), Takedown Detents, Trigger Pin, Hammer Pin, Hammer Spring, Trigger Spring, AR Firing Pin, Extractor Pin, Gas Tube Roll Pin, Ejector Roll Pin, Rear Base Spring Pin, Trigger Guard Pin, Bolt Catch Release Pin, Buffer Retainer Spring, Selector Spring, Bolt Catch Spring, Detent Spring, Ejector Port Cover Spring, Front Sight Spring, Ejector Spring, Extractor Spring Assembly, Disconnector Spring, Detent Spring, Magazine Catch Spring.