Faxon Firearms Duty Series AR-15 300 Blackout 10.5" Gunner Barrel - Nitride

The Faxon Firearms Duty Series Gunner barrel is a standalone AR-15 barrel chambered in 300 Blackout. Its compact 10.5" length and pistol-length gas-system location suit compact, direct-gas AR-15 builds.

Faxon's Gunner profile uses a Government-style taper behind the gas block and a lighter Pencil-style section forward of it. This contour retains material near the chamber while shifting barrel weight rearward. The barrel is made from 4150 chrome-moly-vanadium gun-barrel-quality steel and weighs 1.10 lb.

The bore is button rifled with a 1:8 twist. A black QPQ nitride finish covers both the bore and exterior. Additional build details include 5/8x24 muzzle threads, an 11-degree target crown, and a 0.750" gas-block journal measuring 1.9" long.

This barrel is stress relieved, air-gauge tested, magnetic-particle inspected, and individually checked for headspace. It is supplied in New condition with an installed M4-pattern barrel extension. A gas block is not included.