Cody Wilson did an AMA on reddit. Here are some of the highlights some of you worry worts need to see:
For sure. In fact, we've done about as much as is possible on the AR platform in fused deposition ABS. .223/5.56 is a high pressure round, and doing an upper and barrel is not realistic.
The AR is simply too powerful a rifle to be printed in ABS. I don't see this happening, but it may be possible for them to print handguns soon.
Actually, printable springs are doable: http://www.youtube.com/watch?v=FbszBmZX4KA But in these weak and brittle thermosets/plastics we've got issues making barrels and bolts.
[img]I really wonder... It seems to me the materials will need to be much more complex and improved to drive adoption. But then adoption doesn't seem to be slowing down. We need intrepid people to push the tech if it's going to go anywhere.[/img]
[img]Barrel work is going very well. Actually we've exploded and broken a few! But I'm a survivor.[/img]
[img]I don't think there's a direct personal advantage in printing a gun versus making or purchasing a traditional one. Printed guns aren't even proven technology, and are extremely impractical devices from my experience.[/img]
As you can see, the chances of every slap dick emo kid printing his own arsenal and going on a shooting spree are not very realistic