Proof Research PR15 Carbon Fiber AR Barrel, 22 ARC, 18" Stainless - PROOF 143339

This is an 18-inch carbon fiber wrapped barrel chambered in 22 ARC, designed for AR-15 platforms with a 1-in-7 twist rate and rifle-length gas system. The barrel features a stainless steel finish, 5/8x24 muzzle threads, and a .750" gas block journal. It weighs approximately 2 lbs 9 oz and is ready for installation on compatible AR-15 builds.