1903A3 drill rifle, A4 sniper clone build: How to remove the rear sight base on a 1903A3

This how I remove the rear sight base from a Springfield 1903A3.
I am building a 1903A4 sniper clone from a recovered drill rifle.
Check out the next step in this build, drilling and tapping for a scope base. https://youtu.be/5K7jJ_l8GIw

Видео 1903A3 drill rifle, A4 sniper clone build: How to remove the rear sight base on a 1903A3 канала Hebes 405