Slick video!

(You should have mentioned KCA Forum. BTW - Bower's is a terrible information source on Krags).

Your current rear sight is a Redfield, #102-K, (Not William's, which is good - no holes required).

Your 'banded' front-sight appears to be a Lyman or Redfield.

Your bolt-sleeve has an after-market safety, probably Buehler.

Krag sight-screw threads are .156"X 30 tpi. You need 1901 sight screws. Originals show up on ebay. S&S Firearms, Glendale, N.Y., has reproductions.