Mossberg 500 Three Barrel Combo Mossberg's 500 pump-action shotguns offer an amazing amount of gun for a unbeatable price. The The 500 is built to the same uncompromising mil-specs as the renowned Mossberg 590.A simple change of barrel and/or choke tubes is all that's required to take the Mossberg 500 12 Ga. 3-Barrel Combo shotgun from upland birds to waterfowl, to turkey, to deer. The 500 features Quiet Carry dual-action bars, 3" chambers and an ambidextrous safety,Finish: Mossy Oak Break-up Country CamoGauge: 12 gaugeChamber Size: 3"Action: Pump ActionBarrel set included:- 24" Vent rib ported, adjustable front and rear fiber optic sights with XX-full choke tube- 28" Vent rib ported, fiber optic bead sight with AccuMag choke set- 24" Ported fully rifled bore deer barrel with cantilever scope mounts.