Proof Research AR Style 300 Blackout 12.5" Pistol Length Barrel, Carbon Fiber/Steel - 100523

This Proof Research AR-15 compatible barrel is chambered in 300 Blackout with a 12.5" length and 1:7" twist rate, designed for pistol-length gas systems. The barrel features a carbon fiber wrapped exterior over a steel core with a threaded muzzle (5/8x24) and comes ready for direct installation into standard AR platforms.