North American Arms' Black Widow Mini-Revolvers evolved from their popular .22 Magnum frame series and include the time-tested design characteristics that are incorporated in all NAA Mini-Revolvers. The result is enhanced stability and accuracy for the shooter. The .22 Mag Mini-Revolver can be used with all popular .22 Magnum ammunition, including .22 Magnum shot shells. The Mini-Master has a heavy vent barrel, a bull cylinder, and oversized black rubber grips. 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 comes with a special Conversion Cylinder that holds .22 Long Rifle rounds and fits in the .22 Magnum Mini-Revolver. Fixed sights. 5-round capacity.