Ok, so let's move on to the next problem. What are we trying to light up here exactly? The lens at the front or the 'tell' lights on the grip that light up when he selects different arrowheads? Either way, the light itself is tiny even in reality, in 1/6 scale it would be almost unnoticeable. Are we talking one LED lighting them all up, somewhere in the grip? The apertures for emitting the light would be so tiny that having 'light slop' would be almost inevitable, and that would look worse IMO than having no lights at all.
Sorry, just do not see how that is remotely feasible.