"Get your home range started today with our basic 9mm cartridge. The 9mm cartridge may be the best bang for the buck, but is ready to grow when you are. Add our adapter kit for additional 40 / 45 calibers, or any of our adapters and use this 9mm cartridge with all of your other firearms. Load the SureStrike cartridge in your weapon following our included user guide. Hang the included reflective targets up across a room, take aim, and pull the trigger. When you dry fire the SureStrike emits an eye safe shot of red laser light. You get instant visual feedback of shot placement. This immediate feedback from the SureStrike transforms regular plain dry fire into a powerful learning experience."