Photo: Robert MacPherson/AFP/Getty Images
For better or worse, it may soon be true that anyone with a computer and a 3-D printer could become a gunsmith. You can put together the Liberator handgun from parts churned out by a 3-D printer using designs available on the Internet. Within 48 hours of downloading the design, software engineer Travis Lerol (video) of Baltimore, Md., used his US $1300 3D Systems Cube printer and $30 in materials to make his own working pistol.
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