Standard manufacturing DP12 The DP-12 is a bullpup 12-gauge pump actiondouble-barreled shotgun designed by Standard Manufacturing. It has two tube magazines, each of which feeds its own barrel. Each magazine tube can hold up to seven 2.75-inch (70 mm) 12-gaugeshotshells or six 3-inch (76 mm) shotgun shells. Free layaway available stop in 800 East Eau Gallie blvd IHB 32937