This pistol comes with two interchangeable cylinders, allowing the user to fire both 22 LR, and 22 WMR. The Ranger II 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.