i was watching this video about these 2 college students in texas who are trying to change the game of gun laws you need to check it out http://defensedistributed.com/.Tell me what you think
I think they're going to wind up in court for copyright and patent infringement.
It's up to the end user to make sure he doesn't run afoul of the law by producing something he shouldn't
On the other hand, if they start distributing plans to make near-exact duplicates of existing weapons, then they probably will run up against patent laws.