Despite hysteria from the ignorant, it's perfectly legal in most of the USA (local jurisdictions may vary). The key breakthrough is "printing" an AR15 lower re

Despite hysteria from the ignorant, it's perfectly legal in most of the USA (local jurisdictions may vary). The key breakthrough is "printing" an AR15 lower receiver. All other parts needed are, by law, mere accessories. (Note that law is often very different from practical and/or social reality.) Buy those parts mail-order, and (so long as barrel is over 16" and total length exceeds 26") it's legal and functioning. Of course, "printing" the lower receiver at this point still suffers precision and strength issues, but just a matter of time before serious metals can be used and the item hardened. The great thing about doing this with the AR15 lower receiver is that it serves more to just screw all the real precision-and-strength parts together, while being less so itself. The problem with most lawmakers is all too often they know little about what they're legislating about, consenting to the demands of the ignorant and biased to circumvent restrictions rather than addressing realities in a straightforward Constitutional manner. In this case, attempts to ban certain products by practical irrelevancies result in cases such as this: form a single odd-shaped part, and all kinds of restrictions are avoided.