[daveFNbuck]

I think a lot of the scare comes from assuming you can easily 3D-print something functionally identical to a handgun you'd buy at a store. There's also the legitimate concern that 3D printing will one day be much easier.

[leephillips]

Of course, the plastic guns are practically useless:

https://www.theregister.co.uk/2013/05/10/oh_no_its_the_plast...