http://www.webpronews.com/dont-unde...un-controversy-watch-this-documentary-2013-03 thought this was very interesting. If 3d printing does become affordable in households across america it would be a huge impact on gun control since the ATF allows the manufacturing of homemade guns as stated in the video. I think it would also really hurt some gun companies. make sure to watch the last 1 min of the video thoughts? Wanna kill these ads? We can help!