The TriStar Viper G2 is a series of gas operated semi-automatic shotguns. They are available with wood or synthetic stocks and each Viper G2 features a chrome lined 3 chamber threaded barrel and Beretta-style IC M and F choke tubes. Additional features may include a vent rib with matted sight plane fiber optic sight quick shot plug removal barrel swivel studs tubular magazine soft touch stock and forend coating (synthetic models only) and adjustable comb (Sporting model only). Details Manual E-Z load magazine cut-off. 5rd magazine (shot plug included). Ventilated raised target rib fiber optic front sight and brass mid bead. TriStar select wood with adjustable comb. Chrome-line chamber and barrel. Extended BerettaBenelli style chokes (SK IC M F). 12ga 3 30.