Maintain Your Grip. For surgical control when using an X-Series WeaponLight (X300, X400), the DG grip switch uses a minimal center-mounted pad. This allows the operator to activate the light with finger pressure without needing to move a finger from the grip.
 
Additional Information
For easy Weapon Light activation without compromising grip on the weapon
Ambidextrous dual momentary and constant-on push/toggle switch
Models to fit a wide variety of common semiautomatic pistol models