Guns don't kill, people do. No laws... but if you print it to look real, you might get shot!
Technically, toy guns should have a bright orange ring on the barrel for the user's safety.
In Europe(Germany) is illegal to alone download and produce plans for firearms and weapons as well as printing them... u can get some serious jail time here...
In USA they are more openminded concerning this subject
if you are situated in europe dont try downloading firearms plans without using proper VPN...
You could print firearms in europe if you have a license to build arms, which you probably wont be able to obtain in this life...
Now that somebody has 3D printed and fired a plastic gun (no metal parts apart from the firing pin, bullet and perhaps a spring) and the design is out in the wild...?
Now that someone has 3D printed and shot a plastic gun (no metal parts except the firing pin, bullet, and possibly a spring) and the design is public...?