Interesting idea. I would imagine with some tinkering, you could make you some type of "periscope device". I think SolarForce made a head that you could screw on a Surefire 6P or the like. It ran a P60 drop in from what I remember. You could investigate that. But, it was a few years back. So not sure now a days. If you are interested in buying a new right angle AA light, ArmyTek and Zebralight are what I would look into.
Good luck.