[expat2]

Right now, it is not difficult to make a fully automatic weapon - the Afghans do it in very primitive workshops, making AK-47s. The reason it doesn't go on too much in the US is that it is illegal and most gun people are law abiding citizens. That will discourage a lot of 3D gun builders.

However, if our law-abiding citizens lose faith in the honesty of their government and/or feel their liberty seriously threatened, all bets are off. The only problem then will be that fully-automatic weapons are very wasteful of ammo.

[ClearCase_guy]

I agree.

Some things are surprisingly easy, if people have a good reason to do them. On the opposite end of that spectrum, your post reminds me of the scene in the first "Iron Man" movie in which the bad guy (Obadiah) has assembled a team of brilliant scientists in an effort to duplicate Tony Stark's iron man suit. The team finds the task difficult.

Brilliant scientist: We still haven't solved it yet.
Obadiah: Tony Stark did it! He did it by himself! In Afghanistan! In a cave!
Brilliant scientist: Well ... I'm not Tony Stark.

[Gadsden1st]

Anyone come up with a way to print bullets?? A restriction on gun powder would make these useless.