One gun enthusiast has successfully built and fired a the first gun using an AR-15 rifle part made with a 3D printer
The gun maker first printed the design with ABS plastic and used a conversion kit to assemble a .22 pistol
To test the 3D-printed part further, a metal AR-15 upper receiver was attached and fired a few shots with a higher-caliber .223
The existing design was intended to be made out of solid metal, so the gun maker altered it a bit by strengthening some of the lug holes and adding a trigger guard
As the technology improves, 3D printers are being used more and more to create a wide variety of objects, some incredibly useful (like skeletal implants) and some just for fun (like custom robot figurines). Here's another - somewhat controversial - example of just how ubiquitous this technology could become: a working gun built using an AR-15 rifle part made with a 3D printer.
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