Has anyone ever had, or is familiar with this K grip, w/ laser. The laser emmiter goes in the end of the cocking tube, and replaces the dust cap. It is charged by plugging a 9 volt battery into the bottom of the grip, in the plug, via a short wire with a 9 volt battery plug. This unit is not holding a charge, it works with the battery connected, but once it is taken away, it does not emit a laser. I hoped someone was familiar with this unit, and knew who could repair it. Any info from someone who has owned or seen one would be helpful. Thanks. Pics attatched.