I have the Meng JagdPanther G1 kit and it can be built with one of three gun mounts. No bolts, part D2, or bolted, parts C37 and C38. Also in the kit is a 4th type of mount, part D16. I found a few pictures of the JagdPanther with the 4th type of mount, which looks like a transition type. Two JagdPanthers had the one piece barrel, at least one has the two part barrel. The clearest is this one:
![source: imgur.com](../../../i.imgur.com/ukYM60I.jpg)
My question is, is this a standard gun mount used by all the factories, or one used at a specific factory? I like the look, and want to built this tank, and I'm curious about it, and google came up with nothing useful.