Sorry I wasn't very clear....and our internet went down the last couple of days. It is the rear sight. 100 yard fixed and the 200 and 300 both flip up. For the life of me I cannot find what a base for it is supposed to look like. At this point I think it's time to just mil some thing out myself. It's not like this is going to be a period correct build or anything. Thanks much for the heads up on NECG.
I had two sets of sights like that. I did not like them. I replaced one with an aperture sight - the Winchester.
The base of one of my flip up sight (old Winchester, I believe) fit into the standard cut in the barrel. The other was on a Ruger African 77. The solution on the Ruger was to epoxy the 200 and 300 sights from coming up.
It seemed to me that if a shooter was in a hurry the sight might be in the wrong position and the shooter may not notice it. Just my two cents.
