Faxon Firearms 5.56 9310 Bolt - Nitride - FF556BCNITRIDE
Out of stock
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 superiorcorrosion 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.
When ordered with a barrel, Faxon personally checks and guarantees safe headspacing. If ordered through the barrel webpage itself, Faxon offers a full matching service with unique laser engraving on both barrel and bolt.
Detailed 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
| Weight | 4 oz |
|---|---|
| Dimensions | 2.8 × 0.75 × 0.75 in |
| MPN | FF556BCNITRIDE |
| UPC | 816341020863 |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
Customer Reviews
- Reviews
- Questions
- bolt
- AR15
- quality
- o ring
- lock up
USOutstanding quality
Bought this to go with my Faxon 10.5" pencil barrel. Extremely high quality and super tight lock up.
USFine Faxon Fit
I matched the bolt up with a Faxon Gunner barrel. So far no problems and don't foresee any in the near future.
USFaxon 5.56 9310 Bolt
This is a good AR15 bolt. The o ring is unnecessary as it has an adequate extractor spring with a black buffer. Based on your set up, if you get a 2 O’ clock ejection pattern, try removing the o ring as this provides an overly aggressive contact with the extractor.
Customer Service
Although my cam pin would not fit in this bolt, it was from an inexpensive BCG and seemed like there was a slight variation in diameters. Customer service from AR15Discounts and Faxon were great providing spare cam pins and checking the parts and even supplying the return label for shipping. IMHO, it is when something goes wrong you see how a company responds and both Faxon and AR15Discounts stepped up.
