This is a Mossberg Shotgun: Pump Action known as the 500 chambered in 20 Gauge, model # 54210, UPC 015813542104
Model Series: 500
Gun Type: Shotgun: Pump Action
Caliber: 20 Gauge
Action: Pump Action
Capacity: 5+1
Finish: Black
Stock: Black Synthetic Adjustable Stock
Sights: Front & Mid Bead
Barrel Length: 22 Vent Rib
Overall Length: 39.75 Minimum Length of Pull
Features: Sling Swivel Studs