Faxon Firearms Ff65Gbcnitride Type 2 65Gr Bolt Nitride

The Faxon Firearms Type II 6.5 Grendel bolt carrier assembly is built for shooters who demand precision and durability beyond standard mil-spec. Faxon starts with 9310 tool steel—a premium material that outperforms conventional bolt steel—then salt-bath nitriding the entire assembly to dramatically increase surface hardness, reduce friction, and deliver corrosion resistance that leaves phosphate-coated bolts in the dust. Every bolt is magnetic particle inspected (MPI) to catch internal flaws before they become failures downrange.

If you're running a 6.5 Grendel or building one from scratch, this bolt is engineered for reliability under demanding conditions. The bolt face is sized to SAAMI specification for 6.5 Grendel cartridges, and the lugs are chamfered at 45 degrees—a detail that ensures smooth, reliable feeding even with tight tolerances or high-pressure hand loads. The extractor is cut from S7 tool steel and comes fully assembled with spring, silicone insert, and o-ring, so you're ready to drop it in.

Faxon's approach treats mil-spec as the floor, not the ceiling. Full mil-spec heat treatment and shot peening are standard, but the nitriding process is where this bolt separates itself. You get a harder, slicker carrier that runs cleaner, resists corrosion better in harsh conditions, and cycles with less resistance—small gains that add up over thousands of rounds. Whether you're running a precision build at 1,000 yards or a rugged field gun, this bolt handles the work.

Key Features

• 9310 tool steel construction for superior durability and reliability
• Salt-bath nitrided finish for increased hardness and corrosion resistance
• Type II (.136" co-bore) design compatible with SAAMI spec 6.5 Grendel barrels
• 45-degree chamfered lugs for smooth cycling and fast, lightweight action compatibility
• S7 tool steel extractor with spring, insert, and o-ring pre-installed
• Magnetic particle inspection (MPI) of all components for internal soundness
• Full mil-spec heat treatment and shot peening

Specifications

Frequently Asked Questions

Is this bolt compatible with my 6.5 Grendel barrel?

Yes. The Type II (.136" co-bore) bolt face is sized to SAAMI specification for 6.5 Grendel cartridges. It is also compatible with 6mm ARC SAAMI spec barrels.

What's the advantage of nitriding over standard phosphate coating?

Nitriding increases surface hardness significantly and reduces friction, resulting in smoother cycling and better corrosion resistance compared to typical phosphated bolts. The nitrided finish also helps resist wear in harsh conditions.

Does this bolt come fully assembled?

Yes. The extractor, spring, silicone insert, and o-ring are all installed and ready to function. You can install it directly into a compatible carrier group.

Is every bolt inspected for quality?

Yes. All Faxon bolts undergo magnetic particle inspection (MPI) to verify the material is sound and free of internal defects before shipping.