LaserMax Lightning is a universal fit laser with GripSense Activation. GripSense Activation senses the users grip within the detection zone and activates the sight.Dual activation capable with either GripSense or controlled push button. The Lightning does not alter your grip,works with most gloves. Easily programmable for steady or high-vis pulsed beam. External battery access hatch with tool-less entry and a 10 minute automatic time out prevents inadvertent battery drain.