If you're building a real thumper of an AR-15, then you can't go wrong by choosing the Faxon Firearms Gunner Big Bore Barrel, which is purpose-built to handle all the stresses that come with shooting large-caliber cartridges from your AR-style rifle. This particular model of the Faxon Firearms Gunner Big Bore Barrel is chambered for the popular .458 SOCOM and is machined from durable 4150 CMV steel. Each barrel is button-rifled to provide the best possible accuracy. Barrel length: 10.5 inches Pistol-length gas system Salt-bath Nitride treated 1:14-inch rate of twist In addition to its durable construction, each Faxon Firearms Gunner Big Bore Ba Mfg: Faxon Firearms
