The Proof Research PR15 Carbon Fiber AR Barrel is a 16-inch barrel chambered in 6mm ARC, featuring a carbon fiber wrap over a stainless liner and a .750 gas block journal. Proof Research carbon barrels shed weight, dissipate heat well and are known for exceptional accuracy. The 6mm ARC is a modern AR-15-friendly cartridge with strong ballistics at distance. A great upgrade for builders looking to lighten a rifle without giving up performance, with a gas block fit that matches common low-profile blocks.

In stock and ready to ship straight to your door from Dawson Defense, an Arizona-owned licensed dealer.