> it's to stop people from making untraceable guns. the thing that's legal in the us? how is buying some pipe, screws and springs going to be anymore traceable if you add some 3d printed plastic into the mix? considering that a "firearm" in legal terms is a very specific part, you can pretty much buy most of a firearm and then manufacture yourself the remaining few parts.   > using a 3d printers to make a gun may be easier than going to hardware store to do so. 3d printer is not a star trek replicator. you still need plenty of non-3d printed hardware to make a firearm. often the 3d printed guns you see is just the registered part while everything is normal firearm parts that don't need similar regulations.
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