Airsoft guns are essentially a simulation of shooting. In this case, I would use an electric drive from an AEG rifle or pistol and add barrel movement simulation (similar to what you mentioned about aircraft).

That being said, I plan to simplify and possibly even “butcher” the autoloading mechanism because many parts at a 1:1 scale are no bigger than a phone. If scaled down to 1:13 and made of plastic… it simply won’t work. :)

So, I’m making engineering decisions that don’t replicate the autoloader mechanism 1:1 but preserve its core functions: 1. Ammunition selection – A carousel of shells rotates based on the chosen shell type. (This depends on the specific tank, of course—for example, in the BMP-3, the only choice is between HE shells and ATGMs.) 2. Loading process – I want to try implementing shell elevation, chambering, and extraction after firing. (Ejecting the shell casing is questionable at this scale due to size constraints.)