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Tests conducted by ballistic labs and a university in England showed that guns made with thermoplastics on 3D printers are far more dangerous to the shooter than the intended target.

video released by the BBC showed in every case the 3D-printed guns broke or exploded under the chamber force of a bullet being fired. Pieces of the plastic gun were strewn around the firing range — even embedded in the ceiling.

The Liberator design gun printed by the U.K. test lab (Image: University of Warwick).

The university conducted its test in collaboration with West Midlands Police’s National Ballistics Intelligence Service (NABIS).

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