You can 3D print a gun you can use once.

Where are you going to get the bullets from? Or for a shotgun, where is the powder from, the pellets etc.

I live in the UK, I quite like clay pigeon shooting, would it be a shock to you that American mass shootings basically aren't news worthy anymore unless they are more than 2 dozen people now?

That's not correct, if you want a rifled barrel, you do need to electro-machine it, and you might want some airsoft parts, but everything else is bolts and printed parts.

What? Unless things have improved a lot since I last checked all the designs for fully 3D printed guns I could find were one used affairs.

3D printed firearms have drastically improved in the last couple years. Here is a 3D printed glock https://ctrlpew.com/freemans-g26-3d-printable-glock-frame-di..., there are also 3D printed ar/ak lowers.

I don’t think my response was born of political frustration. I think most existing gun control legislation does nothing but annoy legal gun owners. Though I would support things like universal background checks, cool down periods, and price floors to make it harder to get the cheap handguns that are used for most gun crimes. I’m not super informed on gun issues though, and I’d be interested in learning more.

I just think “an expert can make this in their garage” is a really bad reason to legalize something. I don’t think IEDs or street meth should be legal. (Apple M1s and LSD are probably fine though.)