The Proof Research Defiance Ruckus Pre-Fit Carbon Fiber Barrel features unprecedented accuracy, performance, and relentless excellence. Built on a foundation of full-profile, match-grade 416R stainless steel barrel blanks that are turned down to a significantly reduced profile and wrapped with high-strength, aerospace-grade carbon fiber impregnated with a proprietary matrix resin, this 20-inch barrel in 7mm with a 1-8 twist rate delivers a lightweight platform optimized for backcountry hunting applications.
The carbon fibers diffuse heat along the length of the barrel and move heat very effectively through the barrel wall, resulting in barrels that cool faster, maintain accuracy over longer sessions of fire, and live longer. The carbon fiber construction is up to 64% lighter than traditional steel barrels of similar contour.
The carbon fiber and steel barrels for Defiance Ruckus were designed to be simple to install, with the pre-fit barrels chambered and threaded for a simple install that requires only a few specialized tools—simply torque your barrel on, double check headspace with proper gauges and head to the range. All shouldered pre-fit barrels are guaranteed for headspacing.





