FAXON 9310 7.62X39 TYPE 1 BOLT - .125 - NITRIDE
Faxon
$74.99
Faxon 9310 7.62x39 Type 1 Bolt (.125) – Nitride
Category: Rifle Parts
Platform: AR15
Series: Bolts
Caliber/Cartridge: 7.62x39
SKU: FF76239GBCNITRIDE | UPC: 816341024267
MSRP: $76.00
The Faxon 9310 7.62x39 Type 1 Bolt (.125) – Nitride is a premium replacement bolt for AR-15 rifles chambered in 7.62x39. Treating “MIL-SPEC” as the baseline, Faxon enhances material selection, inspection, and finishing to deliver a bolt built for reliability and long service life.
Each bolt is machined from 9310 tool steel, fully heat-treated, shot-peened, and Magnetic Particle Inspected (MPI) to help ensure material integrity. The bolt receives a salt bath nitride treatment to increase surface hardness, reduce friction, and provide superior corrosion resistance compared to traditional chrome or phosphate finishes.
Bolt lugs are chamfered to promote smooth, reliable cycling—even with higher-pressure loads and fast actions. The extractor is manufactured from S7 tool steel and assembled with a spring, silicone insert, and “Crane” O-ring to support consistent extraction.
Note: This is a Type 1 (.125) 7.62x39 bolt and is not compatible with Faxon 6.5 Grendel barrels.
Detailed Specifications
- 9310 Tool Steel Construction
- 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
- S7 Tool Steel Extractor
Frequently Asked Questions
What does “Type 1” mean for a 7.62x39 bolt?
“Type 1” refers to the .125 bolt face depth commonly used in standard AR-15 7.62x39 barrels. Always confirm compatibility with your barrel manufacturer.
Is this bolt MPI tested?
Yes. Every Faxon bolt is Magnetic Particle Inspected (MPI) to help ensure the material is sound and free of defects.
Is this bolt compatible with 6.5 Grendel?
No. This bolt is not compatible with Faxon 6.5 Grendel barrels. Use a Type 2 (.136) bolt for Grendel and ARC cartridges.
Warranty: Faxon Firearms products are backed by our Lifetime Guarantee to the original purchaser against defects in materials and workmanship. Warranty service requires an RMA and proof of purchase. Full terms and exclusions apply.
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Reviews
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Heavy Ironic
With heavy buffer my American AR is now slinging Russian Steel without a hiccup. Faxon Firearms 7.62X39MM Bolt just plain works and 9310 Steel Bolt a must!