"The M2 Series has earned a reputation among hunters as one of the most reliable, hardworking, and fast-firing shotguns available, and the Benelli M2 Field Semi-Auto Shotgun keeps moving forward with such a proud legacy. The M2 operates via Benelli's proven Inertia Driven system that's ultra-reliable, cycling both 2-3/4"" field loads and 3"" magnums interchangeably and without adjustment. The Progressive Comfort system automatically adapts to different loads to reduce felt recoil, muzzle rise, and shooter fatigue so you stay more controlled in the field or at the range. The M2's weather-resistant stock provides an incredibly secure grip in wet or dry conditions, and the buttstock utilizes Benelli's CombTech technology, engineered to reduce facial impact and enhanced shooting comfort under recoil. This model features a Crio system barrel featuring a cryogenically treated barrel with an even-grained, slick surface that minimizes pellet deformation. The 3 included choke tubes are also cryogenically treated and extend deeper into the barrel, producing tight shot patterns that down birds at maximum range. Red-bar fiber-optic front sight and mid-bead. Robust and reliable Inertia Driven operation Cycles 2-3/4"" and 3"" shells without adjustment Progressive Comfort system adapts to different loads to reduce felt recoil and muzzle rise Weather-resistant stock with CombTech buttstock for enhanced comfort Crio system barrel Fiber-optic front sight Includes 3 choke tubes"