This laser sight, looked ok, but the mount is shaped wrong for the rail on the pistol.At first it was almost 18" off the target at 15 feet, when I tried to adjust it with the set screws the cheap allen wrench supplied rounded over. When I used an American allen wrench it stripped out the set screws. I re tapped the set screw threads and put in longer set screws. I then filed the mount to make it fit the Springfield Armory rail and get it very close to the target using the rail mount screws. I was able to then get it on the target. But if you take it off and put it back on , it's way off again, unless you take great pains mounting it. The laser itself seems ok, is very bright, easy to see, and doesn't shift when you fire the gun, but the mount is junk as received !!!
Pros: It's very cheap
Cons: can't get it on the target
This review was written in the old system and had content requirements that are different than reviews written today.