The Mossberg 590A1 Tactical pump-action shotgun was selected by the U.S. Armed Forces. After passing the rigors of MILSPEC qualification, the 590A1 is the duty weapon of choice for the military and law enforcement agencies worldwide. The 590A1 is the only pump-action shotgun to pass MilSpec 3443E. The 590A1 also features a parkerized finish on heavy-walled barrels; metal trigger guard and safety buttons. Features: Mil-Spec construction - the only pump-action shotgun to pass Mil-Spec 3443E Heavy-walled barrels with parkerized finish Metal trigger guard and safety buttons Clean out magazine tube Magpul SGA adjustable LOP stock with interchangeable cheek riser combs, MOE forend, sling pates