is, or soon may be, beside the point.
From Wikipedia 3D Printers Entry.
“As an example of a possible future application, an open source group emerged in the United States in 2012 that is attempting to design a firearm that may be downloaded from the internet and ‘printed’ on a 3-D Printer. The weapon would however still need bullets fabricated by traditional methods. Calling itself Defense Distributed, the group wants to facilitate ‘a working plastic gun that could be downloaded and reproduced by anybody with a 3D printer’.”
Full entry here: 3D Printing