Shop by:

Your results are being filtered by:
  • Finish -> None
Remove Filters


Aero Precision AR15 5.56 Complete Bolt Carrier Group - Nickel Boron

Aero Precision AR15 5.56 Complete Bolt Carrier Group - Nickel Boron

Aero Precision'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.
  • 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


In stock


AR15 Bolt Carrier Groups

The heart of your rifle. The bolt carrier group is one the most important parts in your AR15 modern sporting rifle. Containing the bolt, the firing pin, extractor and various other small parts, the bolt carrier group must be maintained in order for your rifle to continue running well. Inferior parts can cause premature failures when you need the rifle most. In the middle of a 3-gun match or even during your paid range time is a bad moment to have something stop functioning correctly in your rifle.

We recommend only the using the best parts you can find for replacements or for your AR15 build. Inferior parts end up costing you more money in the long run rather than doing it right the first time, not to mention the frustration that comes from having to put your rifle away when you want to use it, all due to a simple part failure. Buy right the first time and keep spare parts in your kit in case you need them. Some parts like gas rings are considered expendable, so you need to keep a few for replacements as well as keeping an eye on your bolt for worn or cracked lugs. Quality is important if you rely on your rifle. Let us help you find the best bolt carrier group for your AR-15!