Duggaboy, a few of them are for long eye relief, not so many but a few. I had the chance to shoot a Carl Gustav from a member of our Gun Club and he had an normal Zielvier from Zeiss on it and it was good to shoot with it at 100 yards. Good clear sight. On Saturday i´m looking to my gunsmith for my selfmade No4 T and than i´ll look for the scopes if there is a useable one so that i can tell you for what Type of old scope you can search.
Regards
Gunner