“A video from Defense Distributed popped up just in time for Barack Obama’s momentous address to the nation about, among other things, banning the sale of 30-round magazines. The video shows a test fire of an assault rifle using a 3D-printed 30-round clip. The capability adds another layer to the loopholes and problems that exist in a ‘high-capacity magazine’ ban. The implication is that, as technology becomes more available, it won’t be long before regular people can put 30-round magazines in the printing queue next to their TPS reports.”
http://www.businessinsider.com/3d-printers-and-high-capacity-magazine-bans-2013-1