Serbu Firearms Inc. Rem 870 12 gauge shotgun. Super-Shorty AOW shotgun receiver converted by Serbu Firearms to function as a short pump-action shotgun. Has 9" barrel, retractible vertical forearm grip, pistol grip and 4-round capacity and breacher muzzle break. This is a $5.00 AOW tax stamp. Class III item. NFA rules do apply. New.