Product DescriptionThe Proof Research 157558 is a pre-fit bolt action barrel built for .22 Creedmoor applications. It features an 18-inch Sendero-profile design with carbon fiber barrel construction to help reduce weight while maintaining the performance characteristics shooters expect from a premium precision barrel. This model is configured with an 8 PXT twist and a 5/8x24 thread pattern, making it a strong option for compatible bolt action rifle builds and precision shooting setups.Product Highlights Chambered in .22 Creedmoor for precision-oriented bolt action rifle applications 18-inch Sendero-profile pre-fit barrel from Proof Research Carbon fiber barrel construction designed to balance strength and reduced weight 8 PXT twist rate supports modern projectile stabilization needs 5/8x24 thread pattern for compatibility with common muzzle devices and suppressor mounts Specs Brand: PROOF RESEARCH Manufacturer Part Number: 157558 UPC: 843068157558 Product Type: Pre-Fit Barrel Action: Bolt Caliber: .22 Creedmoor Barrel Length: 18 in Barrel Description: Sendero Barrel Material: Carbon Fiber Twist: 8 PXT Thread Pattern: 5/8x24 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.