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Faxon Firearms AR-15 5.56/300 BLK Bolt - 9310 Nitride

MSRP: $54.99
$52.25
( saved $2.74 )
1 review Write a Review
SKU:
FF556BCNITRIDE
UPC:
816341020863
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We just can't help not accepting the status quo. Bolt carrier groups are available aplenty, but few could meet our exacting standards for performance and value. 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, which is stronger and nitriding the assembly to increase surface hardness, decrease resistance, and have superior corrosion resistance compared to typical chrome and phosphated 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. Extractors are S7 Tool Steel. From there, the extractor is sprung using the spring, o-ring, and silicone insert.

Features and Specifications:

Bolt:

9310 Tool Steel Construction (Stronger than C158)
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
QPQ - Salt Bath Nitrided

Extractor:

S7 Tool Steel Construction
Fully Heat Treated
Shot Peened Per MIL-SPEC
QPQ - Salt Bath Nitrided

Note - Bolts ordered and deployed with barrels not specifically checked by Faxon for headspacing MUST be checked to ensure safe and reliable function. Faxon recommends Pacific Tool & Gauge headspace kits for all measurements. For detailed instructions on headspacing, see our blog post for instructions.

1 Review

  • 5
    Faxon Bolt

    Posted by Rick on Aug 30th 2020

    Really great fit and finish. I would buy again.

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