"Rev Metal Snap Caps 44-40Win 6pk Description A-Zoom Practice Ammo Rounds are much more than conventional snap-caps. A-Zoom metal snap-caps are precision CNC machined from solid aluminum to exact size, then hard anodized. This hard anodized surface provides for ultra-smooth functioning and long cycling life. The highly durable dry fire ""Dead Cap"" can take over three thousand dry fires while protecting the firing pin. -Totally Safe -Eliminate Unnecessary Risk! -Tough Solid Aluminum Construction Ideal for Training, Storage -Function Testing, Cowboy Action -Teach or Learn Safe Gun Handling -Dry Fire Thousands of Times without Damage -Handles just like Real Ammo"