 Mantis X is a high-tech, easy-to-use system widely used by the military. It started with the Marines, and it helps you improve your shooting quickly. You attach it to your firearm, and you connect it with an app on your smartphone or tablet via Bluetooth. Whether you're dry-firing or actual rounds, you will improve within 20 minutes. That's 94% of shooters improve, and I know I did. It's a responsible way to be a gun owner. If you're ever going to pull a gun, God forbid.