Good call on the knobs, Mechamaniac!
Here's one I found, plus a pretty close dovetail/Weaver scope mount:
What I'm thinking is that they either dressed a knob like this and added the red indicator groove, or they used an original knob as a model which was reverse-engineered in 3D CAD and then fabricated as an SLA prototype (as, I'm guessing, the rest of the clam shell parts). One tell is the fact that there's no knurling on the prop's 2 knobs, and I haven't found any scope knob caps with indicator grooves of any kind. Also, the mounting collar with four set screws is unlike any windage or elevation knob mount I've ever seen, plus the one in the rear of the Wasp is left-tilting, and that tells me original custom 3D CAD modeled design & SLA part.
The flat head screws on the prop are nothing I've ever seen either - further lending credibility to the increasing consensus that this entire prop is scratch built. They're a cross between tri-groove & drilled spanner machine screws:
But I'll put out a challenge: has anyone ever seen tri-drilled spanner flat head machine screws?
I also went back to Matsuo's post, where he stated he hoped the gun was based on a Colt Python. Knowing now that this is supposed to be a 9mm caliber revolver, maybe we should be looking for a .38 Special, and who made the most famous of all, but Colt? Here are a couple that look pretty close, and once again, may have only served to inspire the prop's design, as I no longer believe a real cylinder was used:
S&W revolvers also have tapering horizontal scalloped cuts on their cylinders, but I ruled them out because a) either the cylinder stop grooves are colinear with the cuts or b) they're spaced between the cuts, but with the grooves' "T" scallop cuts pointing downward instead of upward, like the prop & Colt models.
That's all I have for tonight... Keep the brainstorming going! :thumbsup
RR