The PROOF RESEARCH carbon fiber .22 Cal rifle barrel is a premium upgrade for firearms, designed to accommodate various calibers with precision. Developed by PROOF RESEARCH experts, these rifle barrels feature a lightweight and streamlined design, maintaining firearm agility without added weight. Engineered to endure extreme temperatures, this barrel is dependable in diverse environments, from hot deserts to cold tundra's. Made from aerospace-grade materials, it provides exceptional durability and resilience, offering a robust alternative to traditional steel barrels. Enhance your shooting experience with the advanced PROOF RESEARCH bolt-action rifle barrel, where innovation aligns with 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 1:7.5 barrel twist rate Shank diameter - 1.20 inches Breech length - 2.5 inches