Build dependable performance into your rifle with the Aero Precision AR15 5.56 BCG with 9310 bolt and black nitride finish. Precision-machined for smooth, consistent cycling, this complete bolt carrier group is a durable choice for new builds and AR-15 upgrades alike.
Designed for rifles chambered in 5.56 NATO, .223 Remington, or .300 Blackout, it pairs a shot-peened, heat-treated 9310 steel bolt with a hard-wearing black nitride coating. The finish helps resist corrosion and wear, reduces friction, and makes routine cleaning easier—valuable benefits for range sessions, competition, and regular use.
- Compatible with AR-15 platforms chambered in 5.56 NATO, .223 Remington, and .300 Blackout
- 9310 steel bolt is shot-peened for added durability and fatigue resistance
- High-pressure tested (HPT) and magnetic particle inspected (MPI) for bolt integrity
- Black nitride finish offers corrosion protection, wear resistance, and smooth operation
- Full-auto-rated M16-profile carrier is built for robust, dependable cycling
- Properly staked gas key supports a secure seal and consistent gas flow
- Complete bolt carrier group includes bolt, carrier, cam pin, firing pin, and retaining pin
- Aero Precision manufacturing reflects careful machining and attention to detail
Choose the Aero AR15 5.56 BCG with 9310 bolt for reliable function and easy maintenance in a refined black nitride package. Add this quality bolt carrier group to your compatible AR-15 build and enjoy smooth cycling, durable construction, and trusted Aero Precision craftsmanship.
