Yesterday, I successfully printed two of the Zaphnora's disappearing guns, both in 1:220 scale and 1:100 scale. I decided to print the latter scale because I needed larger models to take nice pictures of, and this is the scale that I'm going to offer for sale, this way re-scaling is as easy as possible. The first one I printed was the 77mm cannon:
The other one I printed was the 9-barrel 42mm autocannon, which you can see here: https://www.wargaming3d.com/product/15mm-disappearing-gun-platform-9-barrel-42mm/
I will offer the 77mm gun for sale as soon as I have some more positions available, since I see no reason to offer each individual position separately. The 42mm, for instance, has two different files in the .zip folder that I'm selling, one with the gun level on an extended platform, and the other with the gun elevated on a retracted platform. I currently have model files for the 77mm in three other positions different from the one shown here.