Aero Precision 5.56 Bolt Carrier Group Complete – Nickel Boron



Product Description

Aero’s 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.


  • No Aero ‘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.


  • Platform: AR15.
  • Bolt Material: 9310 Steel.
  • Carrier Material: 8620 Steel.
  • Weight(s): 11.52 oz.
  • Made in the USA.




Technical Information

Material Nickel Boron
Firearm Compatibility
Caliber 5.56 NATO / .223 Remington

Catalog Location

California Prop 65 Warning

WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information visit