The PROOF RESEARCH carbon fiber .22 Cal rifle barrel is a premium upgrade for firearms, designed to accommodate various calibers with precision. Engineered by PROOF RESEARCH experts, these barrels feature a lightweight and streamlined design, maintaining firearm agility without added weight. Built to endure extreme temperatures, this barrel is dependable in diverse environments, from hot deserts to cold tundra's. Constructed from aerospace-grade materials, it offers exceptional durability and resilience, serving as a robust alternative to traditional steel barrels. Enhance your shooting experience with the innovative PROOF RESEARCH bolt-action rifle barrel, where cutting-edge technology meets superior performance. Up to 64% lighter compared to traditional steel barrels with a similar contour Enhanced thermal resistance - optimized heat dissipation for cooler and more durable barrels The product exhibits exceptional durability, being encased in high-strength, aerospace-grade carbon fiber that is infused with a proprietary matrix resin Twist rate - 1:10 Shank diameter - 1.20 inches Breech length - 2.5 inches