The CMMG Mk9 9mm Bolt Rehab Kit contains all the parts necessary to repair or maintain your CMMG 9mm bolt. Kit contains the following parts: Mk9 firing pin, Mk9 firing pin spring, Mk9 extractor, Mk9 extractor roll pin and firing pin retaining pin. Mfg: Cmmg SPECS: Fits CMMG 9mm bolts.
