ASK AN EXPERTDescription
- 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 and "Crane" O-Ring Installed
- Salt Bath Nitrided Bolt and Carrier
- TiN PVD Coated Carrier and Gas Key
- S7 Extractor
- Superfinished Carrier Body
- Forward Assist Serrations
Seeing "Mil-Spec" as just the starting point, Faxon sets out to ensure the best options are available for their 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. Gas keys use grade 8 fasteners and are fully staked for a lifetime of service.
Note: Bolt carriers 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 and Gauge headspace kits for all measurements.
Warranty Information
| Caliber | 5.56 NATO |
| Material | 9310 Tool Steel |
| Color | Gold |
| Finish | Titanium Nitride |
