Dickinson defense pump shotguns are built using a new design that allows for strength, simplicity of operation, and lightweight. You will notice the ease with which the barrel, forend and bolt may be removed as a unit to facilitate cleaning. Smoothness of function is uniform, whether firing light 2.75″ shells or heavy 3″. All materials are the finest for their intended purpose assuring years of trouble free operation. This Marine model has a tactical adjustable stock with pistol grip, Picatinny top rail, ghost ring front sight, and an extended muzzle brake choke.