Guys, this is gonna work.
I completed the raw weapon, minus the racking slide. Banded it up with dual TB gold. The "barrel" is a bit longer than I planned, 95 cm from lock to fork.
I "mimicked" the racking slide with my hands and fingers, it works very fine! Of course I have to clamp the weapon into the vise to do that, but a ball was cleanly loaded behind the lock and the trigger held without any issues.
I fired six rounds, and not one problem arose.
Will make the slide next. Of course, if everything works, then I have tons of cosmetics to do before this will be a looker, too - right now, functionality comes first.
I will probably have to make a steel version in case this baby is reliable.