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. A-Zoom Snap Caps last over 30 times longer than conventional plastic examples and are available in over 120 sizes from .22 Hornet to the .50BMG. From 9MM snap caps for your Luger pistol to A-Zoom Rifle Snap Caps - trust A-Zoom for safe dry firing practice rounds.