Markus! Yeah, this isn't supposed to be any particular E-11, just a version with all the features I like, personally.
I know the mag is too long, I left it long intentionally for the first cut, to make sure I could form it correctly to accept the floor plate. I will be shortening it!
As for the wires, that whole area is kinda "in progress", as well as the power cylinders. I will be making a base for them from sheet aluminum (currently what you see is a printed base), and I machined the "Metalmites" from some steel I had lying around. Unfortunately, I think they're too small, and I was kinda flying by the seat of my pants with the entire assembly. The cylinders themselves are 3/8", or around 9.5mm, so they're undersized as well. I don't have any 10mm tubing lying around, so the 3/8" was "close enough" for now.
The wires are actually something like 18ga copper wire, and they were another "quick solution" for that area. I did actually solder them to the Hengstler terminals, though, which was fun!