My weapon light is a RomnisonRC-601 U2 binned on a bit of pic rail.
http://i281.photobucket.com/albums/kk211/fastcody1/C0CC4191-F046-4CFB-A933-9599EF48D6CC-2917-000004A037F00E46.jpg
Hi, everyone new poster, long time watcher. I have both the SR90 and TK70 and could not possibly choose between the two. The SR90 deffinately wins the throw competition and at distance has a larger and brighter hot spot. I have run it from a fresh full charge to empty and it doesnt get too hot...