Evolution Tactical, a Canadian Airsoft and Paintball equipment retailer has posted online their RIS Foregrip Xenon Tactical Light with QD Mount. It is a high quality tactical RIS mounted weapon light with Quick-Detach mounting. Powered by 3x CR123A lithium batteries, this tactical light produces 250 lumens of blinding light power and weighs only 505g with batteries.  The light weight does not interfere with the manuevarability of your weapon, reducing the weight on the front end.