The Remington SP-10 Magnum is one of the only factory semi-automatic shotguns ever produced in 10 gauge. Gas-operated with a 3.5-inch chamber, it delivers the highest payload of any production semi-automatic shotgun for long-range goose and swan hunting. Discontinued and restarted several times; a rare production item. Type: Shotgun Action: Semi-Automatic Caliber: 10 Gauge Capacity: 3 Year introduced: 1989, USA Weight: 320 oz Overall length: 52" Status: Discontinued Intended use: Waterfowl, Goose Hunting