I bought the LaserMax for my Glock. The Glock is only my 2nd firearm. I am by no means a gun expert. Yet I was able to install this in a matter of minutes following the easy directions. If you know how to remove the top of your Glock this is a cinch to put in. I've tried the laser site at a variety of ranges and it is very accurate. The only thing messing up a great shot is the fact I still don't have a steady pull on the trigger! The battery life on this is very good as well. For me, if I were recommending a laser site mechanism, this is the only one I would recommend!
SF Bay Area