AR-7 Threaded Fluted Sporter Barrel Complete With Barrel Nut, Washer and Front Sight: 4140 chrome moly blue steel 16" barrel , threaded muzzle ½ x 28 x .400, 5 flutes, twist 1:14, 1.35 lbs., knurled aluminum thread protector included. Muzzle break sold separately.
