You can run a Magpul forend with a rail, either offset or direct mount. Ergo makes a decent looking picatinny railed forend, direct attach the light on the side of the forend - lots of options. If you want the true ### appeal solution, there's the Cadex forend. The forend is the place for the light, though, so you can always activate it and don't have a cord running back and forward.