Aero Precision 5.56 Bolt Carrier Group - Black Nitride

SKU# 1677 | by Aero Precision
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The Aero Precision 5.56 Bolt Carrier Group is among the best options on the market for a factory Bolt Carrier Group. It is made to tight tolerances, weighs just 11.52 ounces, and its MPI and HPT tested to continually check those tight tolerances. This M16 profile bolt carrier has forward assist serrations, a properly staked gas key for long lasting strength, and a Black Nitride finish for lubricity. The bolt is manufactured from Carpenter 158 tool steel to last a long time and work just as hard as you do. The bolt’s case extractor is manufactured from hard tool steel for long lasting performance and it features a black Viton O-ring insert for increased tension. Another significant detail of this bolt carrier group is the hard chrome-lined firing pin channel and hard chromed firing pin. The inner surfaces of the gas key are chrome-lined as well. The hard chrome finish on these parts significantly reduces fouling build-up and makes them extremely tough.


Brian (Rev) Norris from AmmoLand says: Another up and coming brand that is making lots of great quality AR rifle parts is Aero Precision. Their Aero Precision 5.56 Bolt Carrier Group is an outstanding entry price black rifle part and has all my basic requirements in a good BCG.”

With multiple 4.9 to 5 Star reviews at the time this was written, you will be glad you purchased this BCG. Not to mention the AR15Discounts Satisfaction Guarantee. This means that if you're not happy for any reason, you can send it back within 30 days for a full refund.



  • Bolt Carrier w/ Gas Key
  • Bolt Assembly
  • Ejector and Extractor
  • Cam Pin
  • Firing Pin w/ Retaining Pin


Technical Details:

  • 11.52 ounces
  • 5.56 NATO, .300 Blackout, .223 Remington compatible
  • M16 profile bolt carrier (Will NOT convert firearm to Full Auto)
  • 8620 steel construction
  • Forward assist serrations
  • Hard Chrome-lined firing pin channel
  • Hard Chrome-lined gas key internals
  • Hard Chromed firing pin to reduce fouling
  • Black Nitride Finish (shot peened)- advanced lower friction coating
  • Gas Key has properly staked Grade-8 hardware
  • Carpenter 158 tool steel 5.56 bolt
  • HPT tested/MPI marked
  • Black Viton (high performance rubber material) O-ring extractor insert

Customer Reviews

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Zach B.
United States

Top of the line

Great finish and fit. Aero Percision is the way to go for any build.

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