I have four lasergrips, and wouldn't consider a self-defense handgun without them. The newest is on my LCP, so I can't speak much on it. But I have them on a Smith 642 .38 that used to be my favorite carry gun, on a Smith 63 .22lr that is with me always in the woods, and on a Smith 625 .45acp that lives in my bedroom. They have never failed me and all are more accurate than iron sights.
Thank all that's Holy, I've never had to shoot anyone, or draw in anger, for that matter. But put that dot on a target and, a moment later, there is a hole. I'll tell you, it inspires confidence. Were one to appear on my chest, I would await further instructions.
Joe B.