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For the serious AR-15 builder or if you’ve managed to fire your AR-15 so much the bolt carrier group has buildup you just can’t steel brush or clean away, Aero Precision has an answer for you. The M16 Bolt Carrier Group from Aero Precision is machined from a combination of 8620 Tool Steel (Carrier) and 9310 Steel (Bolt) and provides that build from the ground up AR-15 or maintenance of the one you have, a valuable addition.
This bolt carrier group from Aero Precision has forward assist serrations, and a Black Nitride finish which is a lower friction coating that minimizes the need for excessive lubricants and constant cleaning.
Shot peened, high pressure tested, and magnetic particle inspected this bolt carrier group from Aero Precision is something you simply need to have for either a new AR-15 build or upgrading an old one.
Cancer and Reproductive Harm