Nextorch WL10 is a reasonably priced, bright and light weapon light with rail mount.
I don’t go to details about the lamp itself, please refer this review http://www.laymanslights.venturous.org/blog/2013/09/nextorch-wl10/
The issues with the lamp are:
- The switch can toggle (turn ON / OFF) from recoil (or simulated recoil by slapping)
- Sometimes the power switch doesn’t click, i.e. the lamps work only as push activated, not toggled on