Im sorry for the confusion.This piece:
View attachment 1772036
That piece was missing in the set of parts that Prop Store acquired, and which I assembled onto the MGC replica for them so they could auction them off. I scaled the dimensions of that part using photo reference of the screen-used Stembridge prop that Brandon provided in conjunction with the parts that I did have. Perhaps I didn't get it 100% correct, but I'm confident that I was at least 98% correct.
Every other Han Rotj DL44 prop had a machined scope rail that was rather thin. A flat rectangle.
The filming live fire prop literally had a thick piece of square stock instead. This is what I was remarking about, the difference.
The 48th Ronin duplicated it remarkably, I get it confused with the filming prop often lol