The Liberty Fighting Barrel from SOLGW is a 5R rifled, 41v50 chrome moly barrel that is phosphate treated and chrome lined. Featuring a .223 Wylde chamber and a 1:7 twist with a DLC coated barrel extension, the Liberty Fighting Barrels is a durable barrel that offers improved accuracy and handling for your rifle. Dimpled for secure gas block installation, the Liberty Fighting Barrel uses the industry standard 1/2x28 threaded muzzle for maximum muzzle device and direct thread suppressor compatibility. FeaturesButton RifledDimpled for secure gas block installationDLC coated barrel extension