The PROOF Research Impact Precision 787R Long Action .300 PRC 1:9 Carbon Fiber Barrel boasts a 1:9 twist that easily stabilizes most .300 PRC loads for superior accuracy and consistency. This performance-enhanced barrel features carbon fiber-wrapped stainless steel construction for unprecedented durability and improved heat dissipation for a cooler and longer-lasting barrel. The pre-fit Zermatt Arms shoulder offers quick, user-friendly installation. Other features include a Sendero contour and precision-machined 5/8x24 threads.