The 223 SureStrike™ laser cartridge is put into the chamber. By pulling the trigger the impact of the firing pin activates the SureStrike™ to emit an eye safe laser pulse, a shot of red light, which simulates the point of impact where a bullet fired from the weapon would have struck. This immediate feedback from the SureStrike™ transforms dry fire into a powerful learning experience. Laser Ammo can customize the SureStrike™ for special police or military applications.