Prevent deformation and wear on your Revolver with A-Zoom Snap Caps. Single Action, lever action or double action - safe dry firing practice. these A-Zoom snap caps are great for safe cowboy sixgun and lever action dry firing practice drills. Quick Draw practice, too. No matter your sidearm, shop Lyman for enhanced safety with the A-Zoom for Revolver Snap Caps. For safety training, function testing or safely decocking without damaging the firing pin, A-Zoom training rounds are much more than conventional snap caps. They are precision CNC machined from solid aluminum to precise cartridge dimensions, then hard anodized for ultra-smooth functioning and long life. Each round has A-Zoom's remarkably durable dead cap proven to withstand over three thousand dry fires while protecting the firing pin.