The Proof Research PR10 Barrel (brand part no. 100042) is a 20-inch, carbon-fiber-wrapped barrel chambered in 6.5 Creedmoor and machined for the AR-10 platform, cut in a heavy contour with a .875-inch gas journal diameter. A 1-in-8 twist rate stabilizes the long, high-BC bullets 6.5 Creedmoor shooters run for extended-range accuracy, and the muzzle is threaded 5/8-24 for compatibility with common muzzle brakes and suppressor mounts. Despite the heavy contour and gas-block journal needed for reliable semi-auto cycling, the carbon-fiber wrap keeps the barrel dramatically lighter than an equivalent steel AR-10 barrel of the same length and profile. It is built for precision rifle shooters who want to save weight on a gas-gun 6.5 Creedmoor build without giving up barrel stiffness or accuracy.

Key Specifications

• Chambered in 6.5 Creedmoor for the AR-10 platform.
• 20-inch carbon-fiber-wrapped barrel in a heavy contour.
• 1-in-8 twist rate stabilizes long, high-BC 6.5mm bullets.
• .875-inch gas journal diameter for reliable semi-auto cycling.
• Muzzle threaded 5/8-24 for brakes and suppressor mounts.

Frequently Asked Questions

What platform is this barrel built for? The AR-10 platform, in a gas-gun configuration.

What twist rate does it use? A 1-in-8 twist, suited to long, high-BC 6.5 Creedmoor bullets.

Buy the Proof Research PR10 6.5 Creedmoor Barrel

Shave real weight off your AR-10 build without losing accuracy. Order this Proof Research barrel from our AR-10 barrel selection, and our Lubbock, Texas team will get it shipped fast.