308 / 7.62×51 Complete Bolt Carrier Group .308/7.62 NATO BCG. Bolt is 9310, case hardened & Cryo treated. Bolt is shot-peened & the Carrier is 8620 Steel
Key features:
Bolt made from 9310 Steel Black Phosphate Carrier
Gas Key is hardened to USGI Spec & Properly Staked, Upgraded Extractor and Treated to Mil-Spec 6875
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