The Mossberg(r) 500(r) is a durable and dependable pump-action shotgun that is also highly utilitarian and reasonably priced. The United States Military's selection of Model 500 and 590 pump shotguns for combat attests to the design's dependability and durability. The Model 500 is available in 12-gauge with either a 28" or 36" barrel, and the 590 is available in 12-gauge only with a 30" barrel. The Mossberg 500 is a reliable firearm that has been manufactured by Mossberg since 1969. It is available in two models: the Standard Model 500 and the Masterpiece Model 590. Both are gas-operated, semi-automatic shotguns that use pump-action technology. They are outfitted with interchangeable one-and-three-quarter inch shells from which to choose as well as a removable plastic stock. One feature that sets these pumps apart from other brands is their ability to hold multiple shells without having to remove them. This allows you to continue shooting after changing out all your spent casings for fresh ones. Both the Standard Model 500 and the Masterpiece Model 590 come with three-inch barrels. They can be had in black only and are designed to be used with both shot and slug ammunition. The maximum overall height of the gun when assembled is about 43 inches, and its weight is approximately 6 pounds 7 ounces.