Proof Research Carbon Fiber Barrel Blank 308 Caliber 18" Sendero Contour 1:10" Twist

Overview

The Proof Research carbon fiber barrel blank in 308 Caliber features an 18-inch length, 1:10-inch twist rate, 2.5-inch breech length, 1.20-inch shank diameter, and Sendero contour, weighing 2 pounds 8 ounces. Built around a double-stress relieved 416R stainless steel core that is cut rifled, lapped, and borescope-inspected, the barrel utilizes aerospace-grade carbon fiber wrapped in a helical pattern. This thermal-engineered design efficiently conducts and dissipates heat through the barrel wall, allowing it to cool quickly and deliver consistent match-grade accuracy and durability during high-volume strings of fire.

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