The software becomes part of the printer. They are linked in a way that one cannot operate without the other.

I didn’t say the law was well written, I find the the most likely way to comply.

I wouldn’t be that hard to read the g-code and reconstruct the model programatically checking for bores and firing pin access, feed that data into a model with some RAG about internal gun dimensions, but the printers are generally too underpowered to do such a calculation.

it’s all a fools errand really, guns can be made out of a handfull of hardware store parts and a drill.