The Faxon AR-10 Big Gunner Barrel (brand part number 10BC8R18NGQ-5R-NP3) is an 18-inch 6.5 Creedmoor barrel machined from 416-R stainless steel for AR-10-pattern rifles. Faxon cuts the bore with 5R button rifling on a 1:8 twist, a combination that stabilizes heavier, high-BC 6.5 Creedmoor bullets while reducing the fouling and jacket deformation associated with conventional land-and-groove rifling. The barrel is fluted to shed weight, finished with Salt Bath Nitride inside and out for corrosion resistance, cut with a polished 11-degree target crown, and threaded 5/8-24 with a nickel-Teflon-coated DPMS LR-308-compatible extension. At roughly 2.46 lbs and a rifle-length gas system, it’s built as a precision option for a 6.5 Creedmoor AR-10 build.

Key Specifications

• Chambered in 6.5 Creedmoor.
• Measures 18 inches in barrel length.
• Machined from 416-R stainless steel.
• Uses 5R button rifling with a 1:8 twist.
• Built with a fluted profile to reduce weight.
• Finished with Salt Bath Nitride inside and out.
• Cut with a polished 11-degree target crown.
• Threaded 5/8-24 with a nickel-Teflon-coated DPMS LR-308-compatible extension.
• Weighs approximately 2.46 lbs and uses a rifle-length gas system.

Frequently Asked Questions

What twist rate does this barrel use? A 1:8 twist with 5R button rifling, suited to heavier 6.5 Creedmoor bullets.

Is this barrel fluted? Yes, it’s cut in a fluted profile to reduce weight.

Buy the Faxon AR-10 Big Gunner 6.5 Creedmoor Barrel

Build a precision 6.5 Creedmoor AR-10 with a fluted, 5R-rifled barrel. Order it from our Faxon Firearms lineup of AR-10 barrels for fast, reliable shipping from our Lubbock, Texas gun shop.