Proof Research Zermatt Origin Carbon Fiber Prefit Barrel 6mm ARC 22" Sendero Contour 1:7.5" Twist

Overview

The Proof Research Zermatt Origin prefit barrel is chambered in 6mm ARC with a 22-inch length, a 1:7.5" twist rate, and a Sendero contour. Built for match-grade precision, the internal core is crafted in-house from double-stress relieved 416R stainless steel that undergoes meticulous drilling, reaming, cut-rifling, lapping, and borescope inspection. The exterior features aerospace-grade carbon fiber applied in a specialized helical wrapping pattern. This design optimizes longitudinal thermal diffusivity, allowing the barrel to rapidly dissipate heat and cool faster than traditional steel barrels while maintaining consistent accuracy during high-volume shooting sessions.

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