http://airsoftdepot.ca/catalog/produ...roducts_id=969
I have this flashlight and highly recommend it to anyone. It is permanently attached to the rail mount but comes with a pressure switch.
It does not actually have IR, the IR setting is a strobe.
It is the most concentrated beam from a flashlight less then $300 I have personally seen and is around, 150-200 lumens, not sure exactly.