North American Arms' .22 Magnum Mini-Revolver is the ultimate in up front, personal, close-in protection. It's small, easy to conceal, and safe to carry. The .22 Mag Mini-Revolver can be used with all popular .22 Magnum ammunition, including .22 Magnum shot shells. As with every NAA Mini-Revolver, the hammer need not rest on an empty chamber. Using the original half-way notch cylinder, the hammer may rest safely and securely without chance of accidental discharge. This model has a holster grip that allows users to clip the Mini-Revolver to a belt or inside their pocket. It also comes with a special Conversion Cylinder that holds .22 Long Rifle rounds and fits in the .22 Magnum Mini-Revolver.