One thing commonly done is to attach a flaslight to the underside of the suppressor using large hose clamps (up to you to figure out how to make them black, paint maybe, I'd personally try gun bluing).
Hard to find a pic of what I mean, but I've seen it in gun magazines a few times, but would look like this (use a different flashlight though):
Or you can get something like this:
http://www.opticsplanet.net/surefire-mount-m23.html