The Auto-Ordnance M1 .30 Caliber carbine is produced in Kahr's state-of-the-art manufacturing plant in Worcester, MA. The Auto-Ordnance carbines are produced using newly manufactured parts on high precision computerized machinery. Models feature American walnut stock and handguard, parkerized receiver, flip style rear sight, flat bolt and a barrel band. Markings include the following: Auto-Ordnance, Worcester, MA behind the rear sight; U.S. Carbine, Cal. 30 M1 on the receiver in front of the bolt and the serial number is stamped on the left side of the receiver.