This is a Ruger Revolver: Single Action known as the New Model Blackhawk chambered in 41M, model # 0405, UPC 736676004058
Model Series: New Model Blackhawk
Gun Type: Revolver: Single Action
Caliber: 41M
Action: Single Action
Capacity: 6
Finish: Blue
Stock: Black Checkered
Sights: Front: Ramp Rear: Adjustable
Barrel Length: 4.62
Overall Length: 10.5