TriStar Cobra III Field, Pump, 12 Gauge 3, 28 Barrel, Blued, Walnut Stock, 5Rd 23129 The TriStar Cobra III is a 3 in. pump action shotgun that allows you to shoot the lightest target loads to heavy waterfowl loads. Removable choke system uses Beretta/Benelli Mobil Threads, includes three choke tubes (IC, M, F), choke box, and wrench. Comes equipped with a walnut stock, rubber recoil pad, swivel studs, and fiber optic sight.