Mossberg 500 Pump Shotgun

Mossberg 500 is a series of pump action shotguns manufactured by O.F. Mossberg & Sons.[1] The 500 series comprises widely varying models of hammerless repeaters, all of which share the same basic receiver and action, but differ in bore size, barrel length, choke options, magazine capacity, stock and forearm materials. Model numbers included in the 500 series are the 500, 505, 510, 535, and 590. The Mossberg is currently[when?] the number one selling shotgun and second in total production to the Remington Model 870.