I think it’s not too difficult to buy a single/double shotgun or .22 target pistol in France, but not too sure about anything more high-powered.
Assuming its accurate, the following is a summary of how they classify firearms:
https://en.m.wikipedia.org/wiki/Gun_politics_in_France
Its my understanding that its not a difficult or lengthy process to acquire a category 5 firearm in France. The problem is, all handguns are apparently classified as category 4, which is harder to acquire. And, of course, although I haven’t come across any info on it, I’d be stunned if France actually allows anything resembling concealed carry.