Parkerized externally and internally chrome lined, the 8620 steel carrier includes a properly machined Mil-Spec gas key that is chrome lined, phosphated and heat treated per GI specifications. It is secured to the carrier via Grade 8 fasteners and properly staked. These precisely machined, finished and hardened parts will ensure long term proper gas system functioning and reliability. Features : Parkerized FinishMil-Spec8620 Steel Carrier158 Steel Bolt
