Load the SureStrikeTM IR cartridge in your weapon following our included user guide. When you dry fire the SureStrikeTM emits an eye safe shot of invisible laser light. You get instant visual feedback of shot placement when using with L.A.S.R Software or AIMWELL targets. This immediate feedback from the SureStrikeTM transforms regular plain dry fire into a powerful learning experience. Where the original SureStrikeTM Premium Kit emits a shot of visible red laser light giving instant visual feedback, the SureStrikeTM IR Premium Kit adds an extra layer of difficulty by using an infrared laser instead. Without a visible laser indicator you must trust your sight picture and trigger control.