Here is Aero Precision .308 Win Bolt Carrier Group, a part many owners buy to tune or repair an AR-pattern rifle.

What is listed: Made from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt); Gas Key: Made from 4130 Steel, attached with Grade 8 hardware, and properly staked; Firing Pin: Made from 8740 steel and hard chrome coated; Fits AR .308 compatible uppers and rifles; Material: Case-hardened 9310 Steel; Extractor: Made from 4340 Steel with double O-rings and double springs.

Columbia Gun Rack covers Columbia, the Midlands and all 46 counties. Parts ship to your door where legal; check your state and local law before you order. We confirm price and availability at checkout, before payment.

Fitment is the most common reason a part is returned. Check the platform in the title, compare it with the lower receiver and fire-control group you own, and message us if you are unsure which version you need.

Columbia Gun Rack added this item to the shop as a new arrival. Details come from the maker's published listing, in our own words. If you need a measurement, material or compatibility detail that is not shown, send us the question before ordering.

Questions about fit? Match the title to your rifle and trigger type, and ask before you order if anything is unclear. Listed as a new arrival and in stock.