Universal Pistol Rear Sight Tool designed for: Removal, Installation, and Adjusting windage of dovetailed rear sights for most Semi-Auto Pistol slides. The Universal Pistol Rear Sight Tool works with many types of semi-auto slides: full, compact, sub compact, and pocket sized semi-auto pistols. Base platform is adjustable for height, to get your slide and rear sights at the proper height for the rear sight pusher. Includes one bottom spacer for some pocket pistol slides for proper height alignment. Multiple Vertical and Horizontal clamps to secure various sizes and types of semi-auto slides in the tool.