Mossberg 500 is a series of pump action shotguns manufactured by O.F. Mossberg & Sons. 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, chokeoptions, magazine capacity, stock and forearm materials. Model numbers included in the 500 series are the 500, 505, 510, 535, and 590.
A couple of 12 Gauge Mossberg 500 Persuader shotguns can be seen in the hands of Billy Darley and another gang member in the murder scene at the gas station, it is used by Billy to blow away the clerk when he goes for his .38 Smith & Wesson Model 64 revolver. It can also be seen in the hands of Jamie in the battle inside "the office".