The Proof Research 22-inch Carbon Fiber Barrel is precision-engineered for 6.5 Creedmoor chambering and designed as a pre-fit barrel for Bighorn Origin actions by Zermatt Arms.Proof Research 22-inch Carbon Fiber Barrel6.5 Creedmoor chamber specificationPre-fit design for Bighorn Origin actionsCarbon fiber construction for lightweight performanceZermatt Arms compatibilityThis premium barrel combines the accuracy and durability that Proof Research is known for with the weight-saving benefits of carbon fiber construction making it ideal for precision shooting and hunting applications.