Would discussing on laws about weapons in different countries be on topic, even if it overlaps Law SE?
Or should I only ask there?
I'd hope they were on-topic
Though, of course, any answers would need to be highly-cited, and disclaimed that they are not legal advice
Since there's no straight-up 'Yes' answer...
The main difficulty I see is that laws are country-specific. Maybe include in the legal tag description that you should be sure to state your country of origin in the title and body of your question.
And as with all SE sites, we still don't want primarily opinion based questions/answers, so they would have to be based on fact.