This is a Mossberg|Mossberg International Shotgun: Semi-Auto known as the SA-20 chambered in 20 Gauge, model # 75771, UPC 884110757715
Model Series: SA-20
Gun Type: Shotgun: Semi-Auto
Caliber: 20 Gauge
Action: Semi-Automatic
Capacity: 4+1
Finish: Matte Blue
Stock: Black Synthetic Checkered
Sights: Metal Front Bead
Barrel Length: 28
Overall Length: 48.5
Features: Vent Rib
