This is a North American Arms Revolver: Single Action known as the Mini-Revolver chambered in 22LR, model # NAA-MML, UPC 744253000577
Model Series: Mini-Revolver
Gun Type: Revolver: Single Action
Caliber: 22LR
Action: Single Action
Capacity: 5
Finish: Stainless Steel
Stock: Black Rubber Grips
Sights: Fixed Marbles 3 Dot Sights
Barrel Length: 4 Heavy Vent Barrel
Overall Length: 7.875
Features: Bull Cylinder