I don’t think gun legislation should attempt that level of specificity. I think that’s a losing game because the more specific you get, the easier it is to end round. Narrow focus on the guns rather than their effects, and systems around them leaves too little addressed. And frankly once you narrow in on the real practical nugget for stuff like assault weapons. Its often impossible to conceive of a direct way to regulate it in isolation. That would actually have any meaningful impact at all.
I do think you need to have a specific end point, or framework worked out. So that practical bits and pieces can be pushed. A pathway really. But the more I think it over the more it seems like broader is better.