Prevent deformation and wear on your Revolver with A-Zoom Snap Caps Single Action, Lever Action or Double Action - Safe Dry Firing Practice Available in a package of 6, 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. Order today! Â