Hey Lou,
Have you found a Inland Type II Hand Guard (the shallow sighting groove - 2 rivet) marked OI or HI yet ?
Just curious as I remember you were looking.
If I were you I'd list a WTB add for one here on Milsurps. You might want to add what color- lighter, medium or dark finish your looking for.
I'll try to help you more when I get time. We've got our 5 year old Grandson visiting. It's hard to keep up with him !!
If you need help figuring out how to list a WTB maybe USGI Bob can help
until I get more time.
Good Luck,