I am working on what i think the bottom part is and yes I agree that I think it is a metal clip. Just waiting for some materials to arrive.
The upper patch looks like metal to me too. Probably has something engraved on it (possibly his Info)
Top patch is about the same size as the 1" webbing...also looks like 2 1x1" patches stacked on the bottom.
Left ring could be a 35mm, Ill play around with it as I have 30, 35, and 40mm split rings on hand.