The M2 shotgun series is the cornerstone of all Benelli shotguns. When the job demands reliability, the lightweight M2 is the shotgun of choice for many hunters worldwide. It can load everything from target loads to the heaviest 3-inch magnums. Similar to all other Benelli shotguns, it features the reliable Inertia Driven system. M2 shotguns come in a 12 or 20 gauge caliber. What distinguishes Benelli from the competition is the ultra-reliability and quality built into every gun based on superior technology and craftsmanship.