This is a Mossberg Shotgun: Pump Action known as the 500 chambered in 20 Gauge, model # 54183-MOS, UPC 015813541831
Model Series: 500
Gun Type: Shotgun: Pump Action
Caliber: 20 Gauge
Action: Pump Action
Capacity: 5+1
Finish: Mossy Oak Break-up Country
Stock: Mossy Oak Break-up Country Synthetic
Sights: 24 Adjustable Rifle/ 26 Twin Bead
Barrel Length: 24 and 26 Vent Rib
Overall Length: 45.5
Features: Sling Swivel Studs