Mossberg 88 Maverick, Pump Action Shotgun, 12 Gauge, 3 Chamber, 20 Barrel, Cylinder Bore, Blued Finish with Flat Dark Earth Synthetic Stock, Bead Sight, 7Rd 31048 The working man's shotgun, the Maverick line of pump-action and over/under shotguns are proven performers - Equally at home in the woods, upland fields, or on home security duty.