Mossberg's 500 pump-action shotguns offer an amazing amount of gun for an unbeatable price. Its performance in the field goes a long way in cementing its reputation with millions of hunters. First and foremost, the 500 is built to the same uncompromising mil-specs as the renowned Mossberg 590. Then a host of features are introduced-Quiet Carry dual-action bars, 3" chambers, and an ambidextrous safety, to name a few. A simple change of barrel and/or choke tubes is all that's required to take one shotgun from upland birds to waterfowl, to turkey, to deer. The 500 Flex has a tool-less locking system that allows for quick barrel changes. This combo includes a 24" ported barrel with a ventilated rib, 3-dot fiber-optic sights, and an x-full choke tube, an 18-1/2" defense barrel with a fixed cylinder choke and a front bead sight, a Flex system tactical forearm and pistol grip, and the original factory box. Its stock, metal, and bore are all in very good condition.