This is a Ruger Revolver: Double Action known as the GP100 chambered in 357, model # 1786, UPC 736676017867
Model Series: GP100
Gun Type: Revolver: Double Action
Caliber: 357
Action: Double Action
Capacity: 6
Finish: Satin Stainless
Stock: Hogue Grips
Sights: Front: Fiber Optic Night Rear: Adjustable
Barrel Length: 4.2
Overall Length: 9.5
Features: Full-Lug Barrel