Mossberg 500, Pump Action Shotgun, 12 Gauge, 3 Chamber, 20 Vent Rib Barrel, X-Factor Chokes, Mossy Oak Obsession Camo Finish, 5Rd 53265 After over 50 years and over 10 million and counting, the most prolific and reliable shotgun in the world is also the most versatile shotgun available. There is a Mossberg 500 to fit every season, every application, and every user.