My favorite light - SureFire M640U Scout Light Pro 1000 Lumen Ultra High Output LED Weapon Light

This is the second M640U I've bought because I like the first one quite a bit. I think I can safely say this is my favorite rifle light. It's extremely bright and the hinge piece attaching it to the hand guard is really well designed (simple and works great). You can also tell from the feel of this thing that it is durable and well made. I haven't purposely (or accidentally) banged it around much, but I would be very surprised if that gave it any problems. Last, the FDE just looks really cool. Will likely purchase more of these.