Proof Research Sig Sauer Cross Pre-Fit Drop In Carbon Fiber 308 Winchester 18 Inch Barrel

Proof Research pre-fit carbon fiber & steel barrels are to be installed in a simple operation requiring few specialized tools. The pre-fit barrels are chambered and threaded for a simple install that requires only a few specialized tools. Simply torque your barrel on, double check headspace with proper gauges and head to the range! Unprecedented accuracy and performance - it does not get much better than Proof Research carbon fiber & steel pre-fit barrels. Features Up to 64% lighter than traditional steel barrels of similar contour Improved heat dissipation for cooler and longer lasting barrels Wrapped with high-strength, aerospace-grade carbon fiber impregnated with a proprietary matrix resin