Proof Research PXT PR15 AR-15 Barrel 6mm ARC 16" Standard Contour 1:7.5" Twist Carbon Fiber

Overview

The Proof Research PXT PR15 AR-15 barrel in 6mm ARC features a 16-inch length and a 1:7.5-inch PXT (PROOF Exponential Twist) rifling progression. This technology is engineered to reduce engraving force, minimize throat erosion, and create a smoother transition as the projectile engages the rifling, resulting in improved consistency, reduced felt torque, and increased barrel life. Constructed with a carbon fiber finish, the barrel includes a rifle-length gas system, a .750-inch gas journal, a .096-inch port size, and 5/8-24 muzzle threads. Weighing 1 pound, 12 ounces, this match-grade barrel offers up to 64% less weight than steel barrels of a similar contour, improved heat dissipation, and reduced harmonic vibration without shifting the point-of-impact during high-volume fire. It arrives fully chambered and ready for installation.

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