Versatility, value and solid reliability make the M3500 the perfect choice for waterfowl, wild turkey or upland game birds. The M3500 handles a full range of loads, from 2-1/4-inch up to the potent 3-1/2-inch Magnum without adjustment. For reliability and performance, no other 3-1/2-inch semi-auto in its price range compares. At the heart of the Stoeger M3500 is the proven Inertia 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 M3500's Inertia Drivenaction is contained primarily within the receiver, giving the Stoeger M3500 a better more centered balance and swing. With no propellant gas venting into the action, the M3500 stays cleaner longer.