The Proof Research Sendero Carbon Fiber Barrel delivers precision performance in 6.5 PRC caliber with a 24-inch length and optimized 1-7.5" twist rate.Proof Research Sendero Carbon Fiber Barrel6.5 PRC chambering for long-range precision24-inch barrel length for optimal velocity1-7.5" twist rate for heavy bullet stabilization5/8-24 threaded muzzle for suppressors and muzzle devicesDefiance Ruckus shouldered prefit configurationCarbon fiber wrapped steel core constructionEngineered for precision shooters and hunters who demand accuracy and performance this barrel combines lightweight carbon fiber construction with match-grade steel for superior accuracy and reduced weight.