Cryptic RKM -.458 SOCOM / .450 Bushmaster Master Repair Kit Manganese Phosphate. 308 WIN / 7.62x51mm / 6.5 Creedmoor) Chrome Firing Pin Firing Pin Retaining Pin Ejector Ejector Spring Ejector Roll Pin Gas Rings (3) Specifications for Cryptic RKM -.458 SOCOM / .450 Bushmaster Master Repair Kit: Manufacturer: Cryptic Caliber: .458 SOCOM .450 Bushmaster Features of Cryptic RKM -.458 SOCOM / .450 Bushmaster Master Repair Kit Cam Pin (Choice of coating) Extractor (Choice of coating) Extractor Pin Extractor Spring w/ Viton Insert O-Ring (Viton Insert not included with .308 WIN / 7.62x51mm / 6.5 Creedmoor) Chrome Firing Pin Firing Pin Retaining Pin Ejector Ejector Spring Ejector Roll Pin Gas Rings (3) Package Contents: Cryptic RKM -.458 SOCOM / .450 Bushmaster Master Repair Kit Cryptic CC-RKM-0404: RKM -.458 SOCOM / .450 Bushmaster Master Repair Kit Manganese Phosphate