I'm very happy with this laser. Looks like the gun came from the factory with the laser. My o Bly complaints are the fact that the grips are quite a bit thicker than the normal 1911 grip, which is fine since I have big hands, but it makes the gun harder to conceal. Also, hard to see on very sunny days, but I expected that.
Pros: Easy to set up.
Cons: Hard to see in very bright light (duh!) makes the grip fatter.
This review was written in the old system and had content requirements that are different than reviews written today.