So, I have some good leads that I'm trying to work out. I don't want to make any big posts until I figure out if they're any good - there hasn't been a whole lot of community hunting on this one, so I understand it's really mostly my project
First off, here are some really good views on the reported (thank you The 48th Ronin
) thicker acetal scope parts. Whoever made these, like he said, made the scope tube large enough to properly fit the scope ring. Here you can see the cap sliding off, revealing the true diameter of the fabricated part.
I believed it of course, but never actually saw it yet and I didn't realize they lathed the bevel down to almost 7/8 and then made the tube itself 1 inch... or they truncated the bevel at 1 inch and the scope ring is tucked against the change, hiding it.
I'm also thinking that the lines on the face and side of the cap were scribed in order to drill holes in it. I mean.. it looks like part of the injection molding marks..
but here you can see just the little dash and no vertical line. That "x" would be where you could drill for the scope tip, but on the other side
I have a picture or two from my phone I need to upload too, hold that thought