AIM AR/M16 .223/5.56/.300 BLACKOUT Bolt Repair Kit. Includes mil. spec., heat treated, hard chrome coated, machined 8640, tool steel firing pin; Firing pin retaining pin; 6 gas-rings; Machined 4140 black nitrided, heat treated, shot peened extractor; Ejector; Black extractor insert; Black extractor insert; Extractor spring; And black extractor o-ring.
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WARNING: This product can expose you to chemicals including nickel & chromium, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to - www.P65Warnings.ca.gov