LaserMax GSLTNR Red Lightning Rail with GripSense BlackGripSense represents the newest generation of laser activation technology by simplifying the activation process. The user simply grips the firearm, setting off a motion sensor once in the detection zone, which then activates the laser immediately and does not require the user to change their firing grip. Additionally, the Lightning with GripSense Activation Technology includes some significant innovations including a fully programmable operating mode,