Benelli M2 S/RIB 21 28 Inch M/C 12G – the Benelli M2 is the workhorse of the semi-auto Benelli shotgun range, with the speed of a thoroughbred. Light, nimble, but ruggedly built, the M2 12-gauge shotgun and 20-gauge shotgun are built around the ultra-reliable Inertia Driven bolt mechanism. The Inertia Driven system allows the M2 to digest nearly any 12 gauge cartridge, from 2-34 target loads to the heaviest 3 magnums. Benelli engineers have also adapted the ComforTech recoil system for the M2. This revolutionary system reduces felt recoil by up to 48 and cuts muzzle climb by 15. When combined, this puts the shooter back on target up to 69 faster than with any other comparable semi-automatic shotgun. The M2 is not only faster, but with the new ComforTech system, it may be the most comfortable shotgun you will ever shoot.