Aero Precision 5.56 Nickel Boron Bolt Carrier Group
Manufactured in the USA by Aero Precision
The Aero Precision 5.56 Nickel Boron Bolt Carrier Group is an eye catching upgrade for your AR15 Rifle. The billet carrier is machined from 8620 steel, case hardened, and features both a properly staked gas key, and forward assist serrations. The bolt is machined from 9310 steel, case hardened, shot peened, MPI tested, and designed to function with the .223 family of cartridges. The mil-spec extractor is machined from 4340 steel, with installed o-ring and spring.
Available with or without laser engraved Aero Precision “A” Logo.
- Machined from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt)
- Carrier has forward assist serrations
- Shrouded firing pin
- Nickel Boron Coating inside and out (Bolt, Carrier, and Gas Key)
- Forged Mil-Spec gas key attached with Grade 8 hardware and Properly staked.
- 5.56 Bolt is shot Peened and MPI
- Mil-Spec Extractor Spring, black extractor insert, Viton O-Ring
- Tool Steel Extractor
- High quality BCG
Arm or Ally is proud to team with Aero Precision to bring you some of the finest core AR15 parts available at an affordable price. Be sure to check out our other Aero Precision products and barrels by Ballistic Advantage. What’s more?? Ballistic Advantage guarantees sub-MOA accuracy!
Manufacturer: Aero Precision
Item #: APRH100070C | APRH100071C
Material: 8620 (Carrier); 9310 (Bolt); 4340 (Extractor)
Finish: Nickel Boron
Compatibility: 5.56 NATO | .223 Rem | 300 BLK | 350 Legend