They are in there really tight, then peened. There was mention on the Saiga forum of some people knocking the rear sight base loose from smacking on it to much.
I removed mine and it took a hell of a blow to get it to move, once it broke loose it moved fairly easy, so you might have to move it to far then set it where you want it.
I removed mine and it took a hell of a blow to get it to move, once it broke loose it moved fairly easy, so you might have to move it to far then set it where you want it.