Come shop & purchase accurate AR-15 barrels manufactured and for sale by the best brands in America! Our Barrels are available in various lengths, finishes (parkerized, nitride, stainless steel), gas systems (pistol, rifle, mid length, and carbine length gas system), and fluting styles. Our AR-15 barrels are cut to various profiles and contours such as M4, heavy barrel, SOCOM, and government profiles. AR-15 barrels are available in popular calibers like 5.56 223 Wylde, 7.62x39, and 300 Blackout. Find everything you need for your AR-15 build here at A1Armory including AR-15 Bolt Carrier Groups, AR-15 Build Kits & Stock/Buffer Parts!