Product Description
Machined from 8620 Tool Steel (Carrier) and 158 Carpenter Steel (Bolt); Shrouded firing pin; Nickel Boron Coating inside and out (Bolt, Carrier, and Gas Key); Forged Mil-Spec gas key attached with Grade 8 hardware and Properly staked; Bolt is shot Peened and HPT/MPI; Mil-Spec Extractor Spring, black extractor insert, Viton O-Ring; Tool Steel Extractor