The TriStar Viper Series Semi Automatic Gas Operated Shotguns are reliable, functional and hard working. Both wood and synthetic models have 3 inches gas operated, semi-automatic shotguns that allow you to shoot light target loads to heavy waterfowl loads interchangeably. Removable choke system uses Beretta/Benell 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 5 years warranty. Features: Manuel E-Z load magazine cut-off Vent rib with matted sight plane Fiber optic front sight 3 Beretta/Benelli Mobil style chokes (IC, M, F) 5 round magazine - shot plug included Chrome lined chamber and barrel Soft touch on all synthetic models Shim kits standard