MossbergA(R) 500 Combo 20-Gauge Pump Shotgun Easily go from bird hunting to deer with the same shotgun. This adaptable, versatile 500 Combo from Mossberg lets you easily swap out the 2 interchangeable, included barrels to go from bird hunting with the 28" field barrel, to bagging a trophy whitetail with the fully rifled SlugsterA(R) barrel. 26" vent rib field barrel 24" ported, fully rifled SlugsterA(R) barrel Accu-Set Chokes: Improved Cylinder, Modified, Full Order today!