Faxon 5.56 Gunner Lightweight 9310 Bolt Carrier Complete - Nitride- TiN PVD

(5 reviews)
Current Stock:

When looking at lightweight bolt carrier groups, we were unsatisfied with what the market had to offer. Seeing a capability gap, we set out to create a bolt carrier group that could live up to the Gunner name with no compromise in strength or function. We set specifications that would allow no compromise:

  1. Lightest Weight Possible (8.5 Ounces Complete)
  2. MIL-SPEC Materials & Finishes or Better!
  3. Forward Assist Serrations
  4. Compatible with Dust Covers
  5. Maintains Full-Auto Trip Sear for full-auto and the new multi-stage trigger functionality

Matching our barrels, we selected Salt Bath Nitride for all the carriers components. By coating all parts, the carrier's natural slickness is increased markedly requiring less gas and pressure to operate. Further, the Nitride process seals components against corrosion while making them fantastically wear resistant. 

Improvements include using 9310 tool steel for the bolt, and 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. 

As a testament of our confidence, the carriers are all laser-engraved with the Faxon Shield after passing all Quality inspections. 

Faxon recommends the use of an adjustable gas block with our Gunner lightweight BCG for proper function.

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
  • TiN PVD Carrier & Gas Key
  • S7 Extractor
  • Superfinished Carrier Body
  • Full Auto Compatible
  • Forward Assist Serrations




  • 5

    Posted by David Deye on Feb 13th 2024

    Looks great in your AR. Gives it that pop and sets your gun apart from the rest. The low mass helps with felt recoil and I would suggest also using an adjustable gas bloc to super tune it.

  • 5
    Faxon 5,56 Gunner Lightweight 9310 BCG Nitride TIN PVD

    Posted by David Deye on Feb 8th 2024

    This bolt is great. Operates smoothly and the Tin coating acts as a good lube in conjunction with a small amount. Adding a adj gas block with it because it doesn't need as much gas Oh and did I mention it looks fantastic

  • 5
    Great product

    Posted by Matthew Damico on Apr 29th 2023

    Product is great exactly as described in information on the sales page packaging and shipping were also great can't wait to order my barrel for my lightweight build keep up the great work will definitely recommend this company and products to anyone that ask

  • 5
    You pay what you get

    Posted by Jesse on Dec 25th 2021

    I was doing my year end built and wanted the gold touch and I went for the Faxon TiN lightweight BCG and after the first 200 rds with no adjustable gas block it didn't fail. The whole building has been a success. I do recommend it

  • 5

    Posted by Jeff on Dec 13th 2021

    I purchased this for my 7.5 inch faxon Gunner barrel in 5.56. It runs very well in my upper. Definitely worth getting