This Universal pistol front & rear sight pusher tool is for: removal installation and the adjustment of the front & rear sights for most semi-auto pistol slides. It has two separate sight pusher blocks each pusher is specifically designed for either front or rear dovetail sights. The base platform is adjustable for height to properly align your sights at the proper height for the sight pusher blocks. The tool has side witness windows on both sides of the tool frame to check for the proper sight and pusher block alignment. The Sight tool frame can be bolted to clamped onto a work surface or clamped onto a vice.