AimPoint Glock Pistol Mount attaches a Micro sight to the top of the slide on Glock pistols. This new Red Dot Accessory from AimPoint replaces the standard Picatinny / Weaver rail mount supplied with the Microsight. This AimPoint Mount is a very simple in using. First, you need to remove rear sight of the Glock pistol. Second, insert the Micro sight base into the dovetail cut in the slide, then tighten a set screw. The last, lock the mount in place. The Glock pistol with the attached Micro sight fits in many holsters.