Proof Research 134481 Barrel Bolt .308 Winchester 20 CF SIG Cross Drop IN

Proof Research 134481 Drop-in barrel designed for the Sig Cross in .308 Winchester. Stand-alone and headspace guaranteed with no gunsmith required. Pre-fit barrel includes barrel extension for seamless installation onto the Cross rifle. Carbon fiber wrapped to significantly reduce weight without compromising accuracy, offering lightweight performance and durability. Lightweight design: up to 64% lighter than traditional steel barrels of similar contour. Extreme temperature resistance and durability provided by aerospace-grade carbon fiber with a proprietary resin. Drop-in installation for quick caliber and performance upgrades.