This is a Heckler & Koch Pistol: Semi-Auto known as the USP chambered in 45AP, model # 81000322, UPC 642230261464
Model Series: USP
Gun Type: Pistol: Semi-Auto
Caliber: 45AP
Action: Double Action
Capacity: 12+1
Finish: Black/ Nitro-Carburized Finish
Stock: Corrosion-Proof/ Fiber-Reinforced Polymer Frame
Sights: Fixed Sights
Barrel Length: 4. 41
Overall Length: 7. 87
Features: Variant 1/ Oversized Trigger Guard/ Ext Slide Rel