Aero Precision 5.56 Bolt Carrier Group, Complete – Nickel Boron
Our upgraded nickel boron bolt carrier group is an eye-catching addition to your AR build. Mil-spec dimensions and coating ensure the highest quality and correct component interface.
- 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
|Made in USA||
223 Rem, 300 Blackout, 350 Legend, 5.56 NATO
Arm or Ally is a stocking dealer for all Aero Precision, Faxon Firearms, Ballistic Advantage, HOLOSUN, Toolcraft, Elftmann Tactical, Timney, TriggerTech, HIPERFIRE and named the #1 Overall E-Commerce Dealer for Aero Precision Products in 2020!