The AR-STONER Ultimate Repair Kit is the best option on the market for replacement small parts for your AR-15. Keep this kit on hand during your next AR-15 build or next range trip. Problems happen, and having the right parts to make repairs in the is critical. This kit includes standard mil-spec parts used in an AR-15, to ensure smooth and reliable operation and build saving time. Add the AR-STONER Ultimate Repair kit to your next order to give you peace of mind.Features:Firing Pin Retaining Pin (3)Firing PinTakedown and Pivot Pin Detent (2)Disconnector SpringExtractor O-RingExtractor SpringHammer and Trigger Pin (2)Gas Tube Roll PinExtractor PinBolt Catch SpringFront Sight Detent SpringExtractorBuffer Retainer SpringEjector Roll PinTrigger Guard Roll PinTakedown PinSafety Selector DetentGas Ring (3)Pivot PinDisconnectorBolt Catch Roll PinTrigger SpringHammer SpringEjection Port Cover SpringTakedown and Pivot Pin Detent Spring (2)Safety Selector Detent Spring (2)Magazine Release Sp...