Faxon FF556BCNITRIDE 5.56 NATO Bolt
Premium 9310 steel AR-15 bolt with black nitride finish. Enhanced durability, corrosion resistance, and reliability beyond standard mil-spec. MPI tested.
Fits: AR-15
Superior Engineering Beyond Mil-Spec
Faxon Firearms approaches the AR-15 bolt as a critical component worthy of premium materials and meticulous craftsmanship. This 5.56 NATO bolt represents a significant step forward from standard mil-spec offerings.
Key Features
- 9310 Tool Steel Construction: Superior material choice over conventional bolt steel, providing enhanced durability and reliability under demanding conditions
- Black Nitride Finish: Increases surface hardness, reduces friction, and delivers superior corrosion resistance compared to traditional phosphate coatings
- 45-Degree Chamfered Lugs: Engineered for reliable feeding and function with high-pressure handloads and lightweight, fast-cycling actions
- S7 Tool Steel Extractor: Premium extractor material paired with a sophisticated spring, o-ring, and silicone insert design for consistent performance
- Full MPI Testing: Every bolt undergoes magnetic particle inspection to verify material integrity and eliminate defects before shipment
Built for Demanding Shooters
Whether you're running a precision rifle, a competition build, or a duty-grade AR, this bolt delivers the reliability and longevity that serious shooters demand. The combination of premium materials, thoughtful engineering, and rigorous quality control makes this an excellent choice for anyone who refuses to compromise on critical components.
Features
- 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
