Proof Research Carbon Fiber Barrel 338 ARC 12" Pistol .750 Gas Block 1:8 Twist

High-performance carbon fiber rifle barrel chambered in 338 ARC with a 12-inch pistol length. Features a .750 gas block diameter and 1:8 twist rate for optimal accuracy and weight reduction. Designed for AR-15 platform builds requiring premium barrel performance with reduced weight compared to traditional steel barrels.