I acquired ModellbauRay (Germany) a set of two 380mm turrets for DKM Bismarck and Tirpitz.
Those turrets show complete and detailled internal arrangment:



BUT...

These are printed at 1:700 scale... yes!



Removing the supports is a very long and chalenging task (it took me 50mn for one turret) and ultrasonic cutter + Optivisor are MANDATORY





Available here (only 1:700 but 1:350 and 1:200 are announced):
https://modellbauray.com/products/1-700-1-350-1-200-german-navy-full-interior-turret-3d-printed-kit-very-detailed

Tempted by the dark side of the Force?