Proof Research PXT Defiance Ruckus Carbon Fiber Prefit Barrel 308 Winchester 16.5" Sendero Contour 1:10" Twist

Overview

The Proof Research PXT Defiance Ruckus carbon fiber prefit barrel combines next-generation rifling geometry with lightweight performance. Featuring PXT (PROOF Exponential Twist) rifling progression, the barrel is engineered to reduce engraving force, minimize throat erosion, and create a smoother projectile transition that increases barrel life by 30 to 100 percent while improving recoil control. Built in a 308 Winchester chambering with a 16.5-inch length, Sendero contour, and 1:10-inch twist, it arrives threaded and chambered for direct shoulder installation. The barrel is wrapped in aerospace-grade carbon fiber impregnated with a proprietary matrix resin for extreme temperature resistance and a weight up to 64 percent lighter than traditional steel contours.

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