Faxon 5.56 M16 Bolt Carrier Group, Nitride

(28 reviews)
Current Stock:


The Faxon 5.56 M16 Bolt Carrier Group, Nitride is a high-performance and reliable upgrade for your AR-15 rifle. This bolt carrier group is designed for optimal performance and is made from top-quality materials, ensuring durability and longevity. The nitride finish on the carrier and bolt provides added corrosion resistance, making it a great choice for use in harsh environmental conditions.

The Faxon 5.56 M16 Bolt Carrier Group, Nitride features a full-auto rated design, making it compatible with M16-style rifles and other firearms that use a similar operating system. The enhanced design of the bolt carrier group provides smooth and consistent cycling, resulting in reliable and accurate performance.

With a user-friendly design and easy installation process, the Faxon 5.56 M16 Bolt Carrier Group, Nitride is an excellent choice for both novice and experienced gun enthusiasts. Whether you're using your rifle for hunting, competition shooting, or self-defense, this bolt carrier group will provide you with the reliable and consistent performance you need. Upgrade your AR-15 rifle today with the Faxon 5.56 M16 Bolt Carrier Group, Nitride.

Seeing "MIL-SPEC" as just the starting point, we set out to ensure the best options are available for our demanding customers. 

Improvements include using 9310 tool steel for the bolt, nitriding the assembly to increase surface hardness, decrease resistance, and have superior corrosion resistance compared to typical chrome and phosphasted bolt carrier groups. All bolts are fully MPI tested to ensure the material is sound and without defects. Bolt lugs are chamfered 45 degrees to ensure reliable action for even the highest pressure hand loads and fast lightweight actions. 

Faxon Bolt Carrier Groups are Superfinished to reduce friction, increase smoothness of operation, and reduce fouling. Further, they are full-Auto rated and maintain the trip for full-auto fire control groups and new multi-stage trigger systems. Gas keys use grade 8 fasteners and are fully staked for a lifetime of service. 


Detailed Specifications:

  • 9310 Tool Steel Bolt
  • Full MIL-SPEC Heat Treatment
  • Shot Peened to MIL-SPEC
  • Magnetic Particle Inspection (MPI)
  • Back of Lugs Chamfered for Reliability
  • Spring, Insert, & "Crane" O-Ring Installed
  • Salt Bath Nitrided Bolt & Carrier
  • S7 Extractor
  • Superfinished Carrier Body
  • Full Auto Compatible
  • Forward Assist Serrations



  • 5
    Faxon 5.56 bolt carrier

    Posted by Joseph Snell on Sep 9th 2022

    BCG headspaced perfectly with Faxon match barrel and operates perfectly in Faxon upper receiver.

  • 5
    Faxon 5.56 M16 Bolt Carrier Group, Nitrided

    Posted by Bradley Gibson on Aug 3rd 2022

    great product

  • 5
    Faxon 5.56 BCG

    Posted by Mike Platfoot on May 6th 2022

    Excellent value and quality for the money spent. I have close to 300 flawless rounds on this BCG at the time of this review.

  • 5
    Faxon m16 bolt group.

    Posted by Gary Ruisinger on May 3rd 2022

    Bought with the barrel in a combo set. Headspace was spot on and seems like a quality product. Pleased.

  • 5
    The bolt was nice and clean

    Posted by Dale Collins on Apr 28th 2022

    I would recommend this bolt to anyone that's looking for a quality bolt

  • 5

    Posted by J Welch on Apr 18th 2022

    I have not finish building my firearm yet to give it a performance review but it appears to be a quality item. The machining and finish is what I expected from Faxon. If possible, I will give an update when completed.

  • 5
    Top notch

    Posted by Brandon gomer on Mar 8th 2022

    Beautiful fit and finish. Zero failures out of 200 plus rounds!! Awsome craftsmanship! Thanks folks!

  • 5
    Great quality and great price

    Posted by Dane on Feb 25th 2022

    Faxon BCG was shipped fast and the price was right. I have not shot this BCG yet but I have shot other people's Faxon 5.56 BCG that performed extremely well and this BCG is of same quality.

  • 3
    FAXON 5.56 M16 BCG ( UPDATE )

    Posted by GARY NORRIS on Jan 29th 2022

    This is an update to my last review , I used BCM upper receivers mated to Faxons Heavy 16" mid length barrels in two exactly the same builds along with these beautiful machined and finished Faxon BCG's . But caution to the wind , I had exact issues with both guns , both would not feed correctly , both were run with D and H / Magpul mags . In both guns the BCG's were changed out to a different brand BCG and functioned without any issues . I have contacted Faxon to check into this issue in case others run across the same . BCM is known for their tight tolerances and Quality . This could be a case where stacked tolerances are occurring . there were several worn high spots on the Faxon BCG's as to where they were rubbing inside the BCM uppers and causing the many feed issues with 20 - 40 rounds . The other brand new Brand of BCG"s funtioned as should with the BCM upper .