Mossberg is introducing four new versions of their 590R rotary safety selector 12-gauge, pump action shotguns with Cerakote Olive Drab Green or Flat Dark Earth polymer-ceramic ...

The Mossberg 590A1 is the most commonly used military shotgun. These pump-action, 12-gauge shotguns are designed for heavy combat with a thick barrel, usually between 14 and 18.5 inches in length.