So if you are on a tight budget and like the idea of a handgun light, this might be an option for you.
How does it go on and off the gun. Tools required?
yeah, little hex wrench, fits mostly large frame, some compacts and hardly any sub compacts that i can tell. it is going to depend a little on the rail design too, but long as it is about 2.5" from the trigger guard to the end of the rail it will likely fit.