The Remington 1100 is the best-selling semi-automatic shotgun in history. Introduced in 1963 with a gas-operated system that significantly reduced felt recoil compared to inertia designs. The 1100 effectively created the market for gas-operated semi-automatic shotguns and defined the category for two decades. Type: Shotgun Action: Semi-Automatic Caliber: 12 Gauge Capacity: 4 Year introduced: 1963, USA Weight: 192 oz Overall length: 47.5" Status: Active Intended use: Hunting, Field, Sporting Clays, Competitive Shooting