http://arstechnica.com/gadgets/2013/...ndgun-is-here/
Quote:
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Last month, Austin-based Defense Distributed was granted a Type 7 federal firearms license. The not-for-profit group of 3D-printing enthusiasts and gunsmiths had been designing and printing weapon components for a while (including AR lower receivers, the portion of an AR legally considered to be the "body" of the firearm), but the federal firearms license enabled them to legally manufacture and distribute "lowers" and other weapons, with some stipulations.
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Ok, so it hasn't passed rigorous testing yet, but as we can see, there is lots of potential in 3d printed firearms.