The Steyr Arms AUG 14.5" 1/2x28 Mud Barrel US1255010671 is a high-performance replacement barrel for the Steyr AUG rifle. This 14.5-inch barrel is the shortest offered by Steyr USA, featuring a 1:9 twist rate for optimal accuracy with various bullet weights. Cold hammer-forged in Steyr, Austria, and machined in the USA, this barrel ensures exceptional durability and performance. The 1/2x28 threading allows for the attachment of muzzle devices, enhancing the rifle's versatility. The mud finish provides a unique and rugged appearance, making this barrel a great upgrade for your Steyr AUG.