Shop BattleHawk Armory for the Mossberg 500 Field/Deer Combo Shotgun This Mossberg 500 Field/Deer Combo features a black synthetic dual comb stock with a blued metal finish. This 12 gauge combo comes with two barrels: a 24" fully rifled barrel and a 28" vent rib barrel with bead sights. It is equipped with a 3" chamber, includes an Accu-Set of choke tubes, and comes with a Dead Ringer 2.5x20mm scope. Durable and easy to maintain, these highly adaptable pump-action shotguns in two-barrel combo sets cover multiple seasons and disciplines.