"The Stoeger M3500 Semi-Auto Shotgun in Camo Finish is an inertia-driven shotgun chambered to accept 2-3/4-3.5"" shells. The receiver is drilled and tapped for Weaver-style scope rail systems. The buttstock houses a recoil reducer to aid in mitigating recoil. The 3500 comes with a shim kit that allows for drop and cast adjustment. A choke key and chokes (IC, M, F, XFT) are included. A synthetic stock saves weight and greatly increases protection from the elements in the field. A red fiber-optic front sight sits on top of the barrel. Inertia-driven system Drilled and tapped receiver Recoil reducer Fit-adjusting shim kit Chokes and choke key included Synthetic stock Camo finish Vent rib Fiber-optic sight"