Stoeger 3000 26 Inch Semi-Auto 12 Gauge Shotgun Synthetic Stock is a 3-inch 12-gauge Inertia Driven semi-automatic shotgun that handles loads up to 3-inch magnums without adjustment -- the perfect choice for waterfowl wild turkey or upland game birds. The heart of the M3000 is the proven Intertia Driven operating system: simple and efficient with only three moving parts in the bolt for lightning-fast reliable operation. Unlike older gas system guns the M3000's Inertia Driven action is contained primarily within the receiver giving the M3000 a better more centered balance and swing. With no propellant gas venting into the action the M3000 shoots clean and stays clean longer.