Our 18” 5.56 barrel is the most accurate and longest lasting barrel attainable for your AR-15 build. We Cold Hammer Forge our barrels, a process that sets us apart from other barrel manufacturers. The 18” Strength to Weight (Daniel’s Heavy Barrel) profile barrel is forged from 4150 Chrome Moly Vanadium steel, Mil-spec heavy phosphate coated and chrome lined with rifle length gas system.