I am having an issue with the front sight of a 1917 being called narrow.

Its quite fat, its not like a 1903 blade sight at all.

Its a type that the USMC moved to on their own for their 1903s.

If it works for my bad old eyes, it would work for anyone.

I would suspect the roll pin is a very nice move to allow height adjustment.

You don't need to change the peep sight on a 1917, you can just cut the top off of it and make it a V, I have seen one (came with a gun) and others done that way.