Need a weapon light setup that takes the least amount of railspace

[gundam83]

I'm building an AR pistol using an Adams Arms 7.5" upper. Unfortunately, this only leaves me 4" of rail space to play with. I have small hands so that leaves me enough room to wrap my hands around the fore-end, however I still want to mount a flashlight on it. What would be the most compact setup that would take the least amount of rail space?

[gundam83]

Anyone know about the KZ mount?

http://www.botachtactical.com/kzofm.html

I have a Vtac mount, and although I like it, it's probably not a good idea to put it on a hot gas block.

[jsebens]

Danger Close Consulting, or perhaps an X300?

[uwe1]

Try Gear Sector. Forget about KZ.