When I wrote about the Digital Fabrication Revolution on The Feisty Liberal a few weeks ago, it never occurred to me that 3-D printing would/could be used by individuals to produce their own guns and high-capacity ammo clips, etc. Should this become a reality and private manufacturing widespread, it will pose some major challenges to regulators and gun-control advocates. This subject has received some media attention lately. Below are a couple articles that may be of interest. The NPR one includes an audio segment.