The Proof Research PR10 .308 Winchester 18″ Carbon Fiber AR-10 Barrel features a rifle length gas system and 1:10 twist rate. This premium barrel is wrapped in high quality aerospace-grade carbon fiber with a proprietary matrix resin and showcases unprecedented durability with extreme temperature resistance and lightweight design.
Proof Research begins with full-profile, match-grade 416R stainless steel barrel blanks that are then turned down to a significantly reduced profile greatly reducing weight, before being wrapped with high-strength, aerospace-grade carbon fiber impregnated with a proprietary matrix resin. The result is up to 64% lighter than traditional steel barrels of similar contour.
Proof Research’s Caliber Matched Gas System (CAMGAS) results in a gas system that is tuned specifically for the cartridge and length of the barrel. The carbon fibers have a unique ability to diffuse heat along the length of the barrel and move heat very effectively through the wall of the barrel, greatly increasing heat transport resulting in barrels that cool faster, maintain accuracy over longer sessions of fire, and live longer.
