PROOF Research pre-fit carbon and steel barrels for Zermatt Arms TL3/SR3, Origin and RimX actions make upgrading your rifle or changing calibers straightforward. This configuration (part number 136638) is built for the TL3/SR3 Long action with a 22-inch barrel length, 1-8 twist rate, 5/8-24 muzzle thread, and Sendero contour, weighing 2 lbs-12 oz in 7 PRC caliber.
Manufacturing starts with full-profile, match-grade 416R stainless steel barrel blanks that are machined to a reduced profile, then wrapped in high-strength, aerospace-grade carbon fiber impregnated with proprietary matrix resin. This aerospace-grade carbon fiber delivers specific strength up to 30 times that of stainless steel and specific stiffness up to 7 times greater than steel.
The barrel design moves heat efficiently through its walls, enabling superior heat transport that results in faster cooling, extended barrel life, and sustained accuracy through extended firing sessions. As a pre-fit Zermatt Arms shouldered barrel, installation is simple—thread it on, torque it down, verify headspace, and shoot.
