This AR-Stoner AR-15 Bolt Carrier Group includes a complete 223 Remington / 5.56x45mm NATO bolt assembly, mil-spec (M16-type) bolt carrier, firing pin, cam pin, and properly staked gas key. The high quality bolt carrier is precision machined from ordnance-grade 8620 chrome moly steel, while the bolt is constructed of high strength 4130 steel. With the exception of the stainless steel firing pin, the entire bolt carrier assembly features a matte black manganese phosphate coating for superior corrosion resistance and durability. The supply of these AR-15 bolt carrier groups is very limited, so make sure to pick one up for your next rifle build or for use as a spare before it's too late!
5.56x45mm NATO bolt assembly
Mil-Spec (M16-type) bolt carrier
The statements and opinions expressed within Customer Reviews reflect each author's personal perspective and do not imply endorsement by MidwayUSA, its Employees or any other organization. Customers should in no way infer that MidwayUSA has validated review information as safe, accurate or appropriate.