Put Crimson Trace laser sights on my S&W models 686 and 340. My wife, who hasn't picked up a pistol in years grouped excellent in and near the black at 20 ft. My grouping and consistancy has also improved. At 55, the eyes ain't what they used to be. Anybody else out there care to comment about laser sights, good or bad? Also, anybody have any experience with the Lasermax laser system for Glock? I'm considering it for my Models 21 and 26. Thanks. S