FAXON SUPERFINISHED 5.56 M16 BOLT CARRIER GROUP - NITRIDE
Faxon
$145.00
Faxon Superfinished 5.56 M16 Bolt Carrier Group – Nitride
Category: Rifle Parts
Platform: AR15
Series: Bolt Carrier Groups
Caliber/Cartridge: 5.56 NATO
SKU: FF556BCGCNITRIDE | UPC: 816341020870
MSRP: $145.00
The Faxon Superfinished 5.56 M16 Bolt Carrier Group (Nitride) is a high-performance, full-auto compatible BCG engineered to deliver smooth cycling, reliable extraction, and long service life in AR-15 and M16-pattern rifles. Starting with “MIL-SPEC” as the baseline, Faxon refines the details that matter—material selection, inspection, surface treatment, and finishing—to provide a bolt carrier group built for demanding shooters.
This BCG features a 9310 tool steel bolt, salt bath nitride treatment on the bolt and carrier for increased surface hardness and corrosion resistance, and Faxon’s Superfinish on the carrier body to help reduce friction and fouling for easier maintenance.
Why Choose Faxon Superfinished BCGs?
Faxon Bolt Carrier Groups are designed for consistent function in hard-use rifles—from high round-count training to competition and defensive builds. The bolt is MPI tested to verify material soundness, the gas key is secured with grade 8 fasteners and fully staked, and the assembly is built to maintain reliable action with modern triggers and full-auto fire control groups.
Key Features
- 9310 Tool Steel Bolt
- Salt Bath Nitrided Bolt & Carrier for hardness and corrosion resistance
- Superfinished Carrier Body to reduce friction and fouling
- Magnetic Particle Inspection (MPI) for quality assurance
- Full MIL-SPEC Heat Treatment and shot peened to MIL-SPEC
- Back of lugs chamfered for reliable cycling
- S7 Extractor
- Spring, insert, & “Crane” O-ring installed
- Full-auto compatible (M16 pattern) with forward assist serrations
- Gas key with grade 8 fasteners and full staking
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
Frequently Asked Questions
Is this bolt carrier group full-auto compatible?
Yes. This is an M16-pattern bolt carrier group that is full-auto compatible and includes forward assist serrations.
What is “Superfinish” and why does it matter?
Faxon’s Superfinish is a refined surface finish on the carrier body designed to help reduce friction and fouling, resulting in smoother operation and easier cleaning over time.
What material is the bolt made from?
The bolt is made from 9310 tool steel and is heat-treated, shot-peened, and MPI-tested for durability and reliability.
What does MPI tested mean?
Magnetic Particle Inspection (MPI) is a non-destructive inspection process used to help verify that the bolt material is sound and free from defects.
Is this BCG compatible with AR-15 rifles?
Yes. This BCG is designed for AR-15 / M16-pattern rifles chambered in 5.56 NATO and is commonly used in .223/5.56 builds.
Does the gas key come properly staked?
Yes. The gas key uses grade 8 fasteners and is fully staked for long-term service.
Warranty: Faxon Firearms products are backed by our Lifetime Guarantee to the original purchaser. Full terms and exclusions: https://faxonfirearms.com/warranty-privacy-terms/
Reviews
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Great quality and great price
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.
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FAXON 5.56 M16 BCG ( UPDATE )
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 .
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FAXON 5.56 M16 BCG
I purchased this to go along with my 16" heavy mid length Faxon barrel . The finish and machinig is top notch and is priced right . It is my first Faxon BCG and I believe it won't be the last . I have used BCM , Daniel Defense , Spikes , Aim surplus and i believe the quality exceeds the price point . All the purchases from Faxon have always pleased me , Several barrels in both 5.56 and 300 ACC and for the money i haven't seem better quality .
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Amazing once again
Faxon once again did not disappoint! Will continue to use their products for my customers builds!
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5.56 BCG
High quality part at an incredible low MSRP.
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Faxon 5.56/300 BLK BCG Complete-Ntride
First build using Faxon products. I am amazed by fit and finish of BCG barrel and gas block. Finished barrel break in today without failure and accuracy was great from the start. Spent cases all landed within 12 inches of each other. Quality surpasses most of more expensive components I have used in past. Most impressed!
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Affordable Excellence
Great BCG with all the necessary features, along with added bonuses that makes this BCG an easy choice for future builds. The right materials in the right places and an attention to Detail often missing at this price point by other competitors. Well over 2000 problem free rounds.
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10/10 it is a Top quality BCG, Which run more than 1000 round without a malfunction!! I would definetly order more.
Pros: HIGH QUALITY BUILD LAST, WHICH TO LAST FOREVER!!
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First time buyer, very impresed
I matched this BCG to a 16'' match pencil barrel and the preformance is just as goo as the product looks....perfect!