I and several others have the Lasermax guide rail sight and no one's had a single complaint. I've had mine 2 years now on my G27 and used it several times and it worked flawlessly. They're pricey, but have worked well and are internal, so no special holster is needed. Also, you don't adjust them. I've had my P228 for 25 years and my son's dept issued him the 226. Sig is a great company and make great firearms, but obviously there's a problem with their lasers.