I'm not proposing any policy. Trying to assess if having assault guns causes more problems than it solves, considering it's hard to keep control of who buys/sells them in a country of 300M+ population. That would probably stand for a justification, wouldn’t it?
We’re also forbidden to keep plutonium or enriched uranium in our basement regardless of what we use it for.
Hell there’s many free countries where it’s illegal to possess weed.