I tell you what. I seem to remember that I might have the outside meat of the sight. I don't think I have the small center insert however. Let me look in the morning and I'll confirm one way or another.
If I have it, we can go pm and I'll ship it to you. It's just sitting there. I haven't worked on Marlin levers in a few years, so you're welcome to it if I have it.
That would be very nice of you. Thank you.