Featuring the Inertia-X Drive these Girsan MC312 shotguns are becoming one of the fastest talked about shotguns on the market. This action is reliable, requiring no adjusting...ever. It remains cleaner than other gas operating systems, allowing the gas, smoke, and burnt powder to remain in the barrel, which means less maintenance required. With only three main parts, it's one of the simplest, yet one of the strongest, lightweight, and perfectly balanced systems out there. Each of these shotguns undergo individual quality control tests from Girsan before shipment to insure proper functionality.