The 1100 in 28 gauge uses a purpose-built scaled receiver to accommodate the smaller gauge. The 1100 was the first widely available semi-automatic shotgun in 28 gauge, opening the gauge to competitive shooting in the 1970s. Still used in sub-gauge sporting clays divisions. Type: Shotgun Action: Semi-Automatic Caliber: 28 Gauge Capacity: 4 Year introduced: 1969, USA Weight: 128 oz Overall length: 46" Status: Active Intended use: Sporting Clays, Skeet, Competitive Shooting