This is a Heckler & Koch Pistol: Semi-Auto known as the P30 chambered in 40SW, model # 81000127, UPC 642230261600
Model Series: P30
Gun Type: Pistol: Semi-Auto
Caliber: 40SW
Action: Double Action
Capacity: 13+1
Finish: Blue Hostile Enviroment
Stock: Interchangable Backstraps and Lateral Plates
Sights: 3 Dot/ Open Square-Notch Rear Sight
Barrel Length: 3. 86
Overall Length: 7. 18
Features: DA/SA Variant 3 with Decocking Button