This FGA Flashlight Grip Adapter fits a Picattiny rail and combines a 1" tactical light mount and a vertical grip into one handy unit. Thumb activated on/off push button with intermittent and constant on positions. Side safety switch prevents inadvertent light activation during covert activities. Storage compartment with screw cap base holds a small cleaning kit or extra batteries. Includes small Picatinny rail that attaches to either side or bottom of mount for the addition of a laser. Rubber pressure switch covers allow for customized pressure switch mounting and sizing. Quickly attaches to rail with captive thumbnuts. No gunsmith required to install or remove. Lifetime warranty.