This is a Heckler & Koch Pistol: Semi-Auto known as the USP chambered in 40SW, model # 81000314, UPC 642230261402
Model Series: USP
Gun Type: Pistol: Semi-Auto
Caliber: 40SW
Action: Double Action
Capacity: 13+1
Finish: Black/ Nitro-Carburized Finish
Stock: Corrosion-Proof/ Fiber-Reinforced Polymer Frame
Sights: 3-Dot Sights
Barrel Length: 4.25 with Polygonal Bore Profile
Overall Length: 7.64
Features: Variant 1/ Oversized Trigger Guard/ Ext Slide Rel