This is a TriStar Shotgun: Pump Action known as the Cobra III chambered in 20 Gauge, model # 23137, UPC 713780231372
Model Series: Cobra III
Gun Type: Shotgun: Pump Action
Caliber: 20 Gauge
Action: Pump Action
Capacity: 5+1
Finish: High Polish Blue
Stock: Walnut
Sights: FT: Red Fiber Optic
Barrel Length: 24
Overall Length: 42.75
Features: Chrome Lined Barrel/ Extended Forearm
