Quote Originally Posted by Bruce McAskill View Post
I wonder if the markings could be early ones for Niedner Inland (NI) front sights? Later Niedner dropped the I and just used the N for all their front sights.
Maybe So, but check a few or all the Early Inland data charts and you won't see any with a NI Marked Front Sight. I didn't find one but I could of missed one.