This laser sight is a nice addition to any pistol, especially when you want to save space and keep the gun's weight and bulk down. I've had it on a Glock 36 for about a year now, and it's done a fine job. It replaces the pistol's rear sight and doesn't add much to the gun dimensionally... but it does make it a more flexible self-defense platform. Check out the review for more info.
Read the Review of LaserLyte Rear Sight Laser