[parkingrift]

There will always be firearms. You can make them illegal but you can't make them stop existing. This is the fundamental problem with these types of suggestions. Switch to bow, it's safer! ...but the criminals (and anyone else) will keep using firearms. Comically absurd idealism about society and the world.

[gigaflop]

Pandora's box was blown open with black powder.

For those with means and motivation (money and machine tools), cheap automatic weapons can be somewhat-easily produced from plans and diagrams online, with parts that can be bought from regular industrial suppliers, or sometimes big-box hardware stores.

Not naming the specific plans I've seen, of course. If someone wants to know, they can look for themselves.

Quality is to be suspect, but if you only need to throw out ~20 rounds of 9mm at something that isn't very far away, it'll get the job done.

[ToniCipriani]

And precisely what is wrong with gun control and mixing it into partisan politics. It's easier to address the means but not the root cause on why the crime was committed in the first place.