Maybe mine is defective - Crimson Trace Laser Grip for Springfield Armory XD45

Just received this and it was a big disappointment. You have to wiggle the actuator switch to make the laser turn on...and only intermittently at that. If you hold the grip too tight or too loose, the laser turns off...you have to play with the pressure on the switch and get it just right to turn the laser on. This isn't very good if you are in a stressful situation and want to depend on the laser. Sending it back for replacement!

On the Pro side...it does fit well on the XD 45 and the concept it good. I like the fact that it is supposed to be intuitive to use without having to use a regular on/off switch to turn it on.

I was planning on purchasing 2 more (for an 9mm XDm and XDs-45). I'll see if a different one works well...otherwise will have to look at another brand of laser.