The Mossberg 930 Pro Waterfowl is optimized for duck and goose hunting with a 28-inch vent-rib barrel, camo or synthetic finish, and extended magazine. Self-regulating gas system handles steel shot and lead shot interchangeably without adjustment. Type: Semi-Automatic Shotgun Action: Gas-Operated Caliber: 12 Gauge Capacity: 5 Year introduced: 2010, USA Weight: 7.75 oz Overall length: 48" Status: Active Intended use: Hunting, Waterfowl