I really liked the idea of this lazer sight, expecially since the Glock 26 does not have rails to attach an external lazer sight, and it is very easy to install and use. The only problem I am having is the lazer keeps turning on without my knowledge while holstered and killing the battery. The end result is I never know if the sight will work if I have to draw my weapon. Also, replacement battiers are not cheap. The issue is they use a slightly longer slide lock as the on/off switch, which tends to move in the holster and turn the lazer on. I originally had the problem with my Crossbreed SuperTuck; I ended up cutting small holes in the leather and plastic where the slide lock rests to help prevent this from happening. However, I like using my Blackhawk SERPA paddle holster for winter carry and now I am having the same problem again. I really don't want to cut holes in this holster as well.
If you plan on using for your bedstand weapon, I would highly reccommend. However, if you plan on using it for a carry weapon, you may need to play around with some holsters to find, or modify, one that will not turn on the sight while carrying.
Remember, equipment can always fail and red lazers do not show up well in sunlight or even bright overcast days. Lazer sights are no excuse for not knowing shooting fundamentals. Always expect you will have to count on your iron sights no matter what supplemental sights you have.
Pros: Easy to install, Can use existing holsters
Cons: Turns on while in holster, Hard to see in sunlight
This review was written in the old system and had content requirements that are different than reviews written today.