Product Description The Proof Research 139004 is a premium carbon fiber wrapped bolt-action rifle barrel chambered in .284 caliber. Measuring 18 inches in length with a 1:8 twist rate, this barrel delivers exceptional accuracy and reduced weight without sacrificing strength or durability. Proof Research is renowned for its proprietary carbon fiber wrapping process, which wraps a stainless steel core with aerospace-grade carbon fiber to create a barrel that is both rigid and significantly lighter than traditional all-steel alternatives. Whether you are a competitive shooter or a backcountry hunter, this barrel is engineered to perform in the most demanding conditions. Product Highlights Carbon Fiber Construction: Aerospace-grade carbon fiber over a stainless steel core for superior rigidity and dramatic weight savings compared to conventional barrels. Precision Chambered: Chambered in .284 caliber with a 1:8 twist rate for outstanding long-range accuracy and bullet stability. 18-Inch Barrel Length: Compact 18" profile makes this barrel ideal for lightweight rifle builds and backcountry applications. Bolt-Action Design: Purpose-built for bolt-action rifle platforms, ensuring seamless compatibility and optimal performance. Proof Research Quality: Crafted by one of the industry&';s most respected barrel manufacturers, trusted by precision shooters and hunters worldwide. Specs Brand: Proof Research MPN: 139004 UPC: 843068139004 Action Type: Bolt-Action Caliber: .284 Barrel Length: 18 Inches Twist Rate: 1:8 Material: Carbon Fiber Wrapped Stainless Steel Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>