In this image you can see the first 3D printed gun which the creator Cody Wilson has named "The liberator". Cody has developed this and argues that "the Liberator demonstrates governments' inability to enforce gun control", I find that his statement is very true although I do not agree with him releasing the blueprint to the public. As of now the blueprint is no longer distributed but people now know this is possible and it could cause the government to make a law against it. I find that just like any other contraband as seen a lot with drugs there always a market that will be created to distribute the product illegally.
All in all I think these 3D printed guns should be a bigger concern because considering they are made of plastic metal detectors would not detect that these guns are being smuggled. I also do find that these guns will prove points to many people that 3D printers aren't just a toy or a game it's a machine that can create destruction.
Links:
http://www.forbes.com/pictures/mhl45ediih/a-symbolic-weapon/
http://www.debate.org/opinions/should-3d-printed-guns-be-illegal
