I’m in agreement with the sage one on this. Yes, people do come in different sizes and shapes but their weapons don’t, at least once you get to mass production.
Given that many sculptors make a separate master for weapons (brownbess, SMLE or whatever), which they then cast up to use with a range of dollies for their figures, then they must be using some sort of a scale for that weapon in the first place. Or aren’t they?
As to Aurore, it’s the colour of lobster bisque….