TriStar Viper G3 Pro Sporting 12 Gauge Semi-Auto Shotgun, 30" Barrel, Blued The TriStar Viper G3 Pro Sporting pairs 12 gauge chambering with a 30-inch barrel and walnut furniture. The Pro Sporting designation and 30-inch barrel identify a sporting configuration, with blued providing its stated exterior treatment. The walnut stock and blued identify the furniture and finish combination. The 30-inch barrel length is a separate dimension from overall gun length, helping distinguish the specific Pro Sporting configuration. Key Features Semi-Automatic Action: The stated operating format for this shotgun. Barrel Configuration: 30-inch barrel. Furniture: Walnut stock configuration. Specifications Manufacturer: TriStar Model: Viper G3 Pro Sporting Gauge: 12 Gauge Action: Semi-Automatic Barrel Length: 30 inches Stock: Walnut Appearance: Blued Shop the TriStar Viper G3 Pro Sporting 12ga 30-inch Blued shotgun at BattleHawk Armory.