The M3500 extends the Stoeger inertia semi-automatic platform to a 3.5-inch chamber, enabling maximum-payload waterfowl loads at a sub-$600 price point. The most affordable 3.5-inch inertia semi-automatic available from any distributor. Type: Shotgun Action: Semi-Automatic Caliber: 12 Gauge Capacity: 4 Year introduced: 2013, Turkey Weight: 192 oz Overall length: 47.5" Status: Active Intended use: Waterfowl, Turkey Hunting