Proof Research PXT Zermatt Origin Carbon Fiber Prefit Barrel 223 Remington 16.5" Sendero Contour 1:8" Twist

Overview

The Proof Research PXT Zermatt Origin prefit barrel is chambered in .223 Remington with a 16.5-inch length, Sendero contour, 1:8-inch twist, and a carbon fiber finish. It incorporates PXT (PROOF Exponential Twist) rifling geometry, which redesigns the conventional twist progression to reduce engraving force, minimize throat erosion, and smooth projectile engagement into the bore. This technology increases barrel life by 30 to 100 percent while improving consistency, reducing felt torque, and helping shooters stay on target. Arriving threaded and chambered for direct installation onto compatible actions without additional machining, the barrel features an aerospace-grade carbon fiber wrap over a steel core. This construction makes it up to 64 percent lighter than traditional steel barrels of similar contour while offering extreme temperature resistance and efficient heat dissipation.

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