1. do your safety check.
2. secure your rifle on a vise , if no vise then have another person hold the rifle firmly but do not have their hands near the rear sight.
3. i prefer to use a sharp tool with a handle but you may use the "L" shape front sight adjusting tool that comes in the cleaning kit.
4. place the tool in the gap which is in front of the ladder , press in hard to depress the leaf spring below the ladder and with the other hand push down on the ladder and slide it toward the rear.