Hi Tim, I have moved some of these on or swapped them since taking these photos, I maybe have about 10-12 guns at the moment, as you will find out if you do get one, they are very addictive!.....the scoped one is one of
three that I have, each with a different mounting system that I have made / modified. These old guns are limited to some extent by being open sights only, (although the actual guns are very accurate if in good order, and will easily hold their own accuracy wise with much more modern guns with open sights).......So on occasions where I get one cheap that is not in the greatest condition, or has the sights totally missing, but it shoots well, then I have had a play around with them. I would not advise doing it on a good condition gun as you will reduce the value drastically in most cases!
I use older scopes as they are more in keeping with the look and period of the guns, and actually I am sure that people were doing this years to the odd gun...I have seen more than one that looked like the work was done a long time ago, and scopes are nothing new .....they used them
way back as long ago as the American Civil War and before (although some were just 'sighting tubes'...ie. no glass).....so I am sure that people have done this in the past.