Steiner

Green Mountain Barrels 5.56 mm, 1:6 twist, 14.7" long, 41V50 steel, weighs 1.8 lbs., AR15 barrel with a button rifled, stress relieved, air gauged. Features include a Mid length, .750” diameter gas system, a black nitride finish inside and out, assembled extension with M4 feed ramps and ½-28 muzzle threads. 1