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Bolt carrier assembly comes fully assembled and ready to be dropped in. The carrier body is machined from 8620 steel, heat treated, MP inspected. The carrier’s bore is hard chromed for increased corrosion resistance and reliability. The bolt is machined from Carpenter 158 tool steel, shot peened to relieve stress, and MP inspected. The bolt and carrier are both treated with a Mil-Spec phosphate coating for its durability and corrosion resistance. The Bolt Carrier Group features a gas key tube that is hard chromed and properly torqued and staked screws.

Technical Information:

223 Remington/ 5.56x45mm Nato / .300 Blackout
Carpenter 158 Tool Steel
Shot Peened
MP Tested
Mil-Spec Phosphate Finish

Commercial Bolt Carrier Type
8620 Steel
Shot Peened
MP Tested
Chrome Lined Firing Pin Channel and Gas Key
Gas Key Screws Torqued and Staked
Mil-Spec Phosphate Finish
Semi-Auto Carrier Design