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New AR10 Nickel Boron (NB) Bolt Carrier Group (BCG)......308 caliber..................
Description:....... 8620 Steel Bolt Carrier....... 158 Carpenter Steel Bolt....... 4140 Billet extractor....... Includes Bolt, Bolt Carrier, Extractor Pin, Firing Pin, Cam Pin....... Properly Staked 4140 Billet Gas Key........ .308 Caliber....... Mil-spec....... USA Made.......Heat Treated for Heavy Duty use.......
Ready to drop in your Mil-spec AR10.