Aero Precision 5.56 PRO Series Bolt Carrier Group - Black Nitride

MPN: APRH101767C


  • Built from the ground up to meet the demands of the most extreme conditions
  • Heat treated, magnetic particle inspected (MPI), and shot peened
  • M16-cut AR-15 complete BCG
  • Properly staked gas key
  • Critical surfaces precision ground for optimal gas efficiency and reliability
  • Super smooth fit and function
  • Black Nitride finish firing pin


  • Caliber: 5.56 NATO / .223 Rem / 300 Blackout
  • Weight: 11.53 oz.
  • Finish: Black Nitride
  • Material:
    • Bolt Carrier: 8620 Steel
    • Bolt: 9310 Steel
    • Cam Pin: 4140 Steel
    • Extractor: 4140 Steel
    • Gas Key: 4140 Steel
    • Ejector: S7 Tool Steel
    • Firing Pin: 8640 Steel
  • Profile: M16

**A full-auto (A.K.A. M16) bolt carrier installed in a standard semi-auto AR-15 will not make the gun fire full-auto.


  • AR-15


  • 1x Bolt Assembly
  • 1x Extractor
  • 1x Cam Pin
  • 1x Bolt Carrier
  • 1x Carrier Gas Key
  • 1x Firing Pin
  • 1x Firing Pin Retaining Pin


The Aero Precision PRO Series 5.56 AR-15 bolt carrier group has been designed from the ground up to meet the needs of even the most demanding shooter under the most extreme conditions. Each component of the Aero Precision BCG was designed solely to increase the life and reliability of the bolt carrier group.

Improved Shooting Experience

All critical surfaces on the Aero Precision PRO bolt carrier group are precision ground for optimal gas flow for improved fit, function, efficiency, and reliability. In addition, the cam-pin channel is counter bored for increased longevity. This eliminates the need for swaging, which increases stress on the bolt during manufacturing.

Superior Craftsmanship

All of the Aero Precision BCG parts are cut from various grades of high-strength heat-treated steel. The bolt carrier is cut from 8620 steel, the bolt from 9310 steel and the cam pin, the extractor and the gas key from 4140 steel. The ejector is machined from S7 tool steel and the firing pin from 8640 steel. All parts are precision-ground after heat treatment and given a black nitride finish for added durability and to ensure smoother operation. The entire BCG weighs just 11.53 ounces, which is actually less than the OEM bolt carrier group.

No Gunsmithing Required

The Aero Precision PRO bolt carrier group comes with all the required parts for installation, and no special gunsmithing knowledge is required.

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