'polandaj' - Your m-1901 sight is a 'mixmaster'.
The leaf for the 1901 carbine sight goes to '23' (for 2,300 yards) and the 'slide' does not shift to the 'left', as you move it up the leaf.
The m-1901 rifle leaf only goes to '20' and has the built in correction for 'bullet drift'.
(The Kragcarbines were not showing the same bullet deviation and drift issues as the full length rifles so there was no drift compensation built into the leaf).
You have a 1901 carbine sight 'lower base' and a 1901 rifle 'upper base'. It doesn't really matter on your nice sporter.
The wood patch in the 'cleaning-rod' groove of your stock was done at Springfield Armory. This was part of the updates done around 1897 and 1902 to make model 1892 Krags into a model 1896 configuration.
Your Krags tell some interesting stories!
Attached - 1901 rifle (bottom) and carbine (top) leaf & slides compared.
Attachment 112055