I bought this for my Glock 17. After a few rounds it would turn itself off. I could live with that, but when I tried to remove the barrel and slide I couldn't The laser moved off of its cradle and prevented the removal of the barrel for cleaning. I had a heck of a time getting the slide off. Got it back into its place and shot again, same problem. Buy a different type.
Pros: Easy set up
Cons: Turns off, won't stay in groove
This review was written in the old system and had content requirements that are different than reviews written today.