I thought the panic was because 3d printed guns are untraceable and can be made from materials that don't show up on airport scanners, etc. (Yes, you can buy a

I thought the panic was because 3d printed guns are untraceable and can be made from materials that don't show up on airport scanners, etc. (Yes, you can buy a bunch of parts off the internet and build your own untraceable gun today, or so I've read.)