Our .22 Magnum Mini-Revolver is the ultimate in up front, personal, close-in protection. it's small, easy to conceal and safe to carry. Whether you carry it for hiking and camping, or for self-defense, this gun delivers when you need it most. 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. Please see our Safety Cylinder page or the owners manual for more information. Our .22 Magnum can be used with all popular .22 Magnum ammunition, including .22 Magnum shot shells (called Snake Shot by some manufacturers).