Finally got mine setup with my new Lasermax laser in front of the small XPS EotechIt took me about 2 weeks of playing with the switch to decide where I wanted it. The switch is much larger than the one on the cheapo laser I used to have. This one was too big to put on the front of the gun like I used to have.And, I have a nice LED light attached to it now - better than that Xenon I used to use. The light goes for 5 hours at about 100% brightness before it starts to taper off.