Turn It On! To activate the laser, simply push IN on the switch, which replaces the slide lock. Pushing in from either side will turn the laser on; the middle position is off.
LaserMax's patented design is the only completely internally mounted laser sight system and can be installed by the user in a matter of minutes. The sights come permanently aligned from the factory for center-of-mass accuracy at 20 yards, with the exception of 1911 and shotgun models, which are user adjustable. They will never drift out of alignment. There is no need to re-zero after changing batteries.