This is a Ruger Pistol: Semi-Auto known as the American Pistol chambered in 45AP, model # 8645, UPC 736676086450
Model Series: American Pistol
Gun Type: Pistol: Semi-Auto
Caliber: 45AP
Action: Striker Fire
Capacity: 7+1 & 10+1
Finish: Stainless Steel|Black Nitride
Stock: One-Piece High-Perf Glass Filed Nylon
Sights: Genuine Novak LoMount 3-Dot
Barrel Length: 3.75
Overall Length: 7.25
Features: 1913 Picatinny Rail/ Stainless BBL/ Ambi Slide Stop