The TriStar Viper G2 PRO Series Semi Automatic Gas Operated Shotguns are reliable, functional and hard working. Both wood and synthetic models have 3" gas operated, semi-automatic shotguns that allow you to shoot light target loads to heavy waterfowl loads interchangeably. Removable choke system uses Beretta(R)/Benell(R) Mobil Threads, includes three choke tubes (IC, M, F), choke box, and wrench. Cerakote receiver, high-grade Turkish walnut with cut checkering and semi-gloss finish. Rubber Recoil pad, Fiber optic sight and shim kits standard, backed by a five-year warranty.Features:Manuel E-Z Load Magazine Cut-offVent Rib with Matted Sight PlaneFiber Optic Front Sight3 Beretta(R)/Benelli(R) Mobil Style Chokes (IC, M, F)5 round Magazine - Shot Plug IncludedChrome-lined Chamber and BarrelSoft Touch on all Synthetic ModelsShim kits standardAction:Gas operated Semi-automatic. Bolt remains open after the last round is fired. If magazine and chamber are both loaded, opening action will result in ejecting shell from chamber and cycling new shell from the magazine into the chamber. If the operator desires to unload chamber only, slightly push lifter up and open action. This cuts the magazine off from cycling new shell while unloading the chamber. Chamber will remain closed if shells still remain in magazine however.Safety:The primary safety is located on the backside of the trigger guard. When engaged, the safety is designed to block the trigger, hammer lever and the hammer which makes the firing mechanism immobile.Magazine:Tubular magazine, bottom loading. Shot plug included and comes installed. Shot plug easily removable by unscrewing the magazine cap. Simple pull plug out and replace magazine cap.