That includes California, of course, which has some of the most restrictive (and appalling) gun restrictions in the country.

But 2A supporters are pinning their hopes on a major lawsuit that stands a decent chance of having California's ban on 3D-printed firearms struck down.

The pioneers of such guns, Defense Distributed, have filed what could be a landmark legal action against the state after Democratic Gov. Gavin Newsom signed AB 1621 into law recently, which bans the manufacture of 3D firearms, which are called "ghost guns" by the left. The case, Defense Distributed v. Bonta, may establish a precedent for the regulation of firearms that are privately manufactured.

The California legislation makes it a criminal offense to buy, possess, or use CNC machines and 3D printers in order to manufacture guns or gun parts. The lawsuit challenges the statute under the auspices of the recent U.S. Supreme Court decision in NYSRPA v. Bruen.

In that case, the nation's highest court ruled that legal challenges involving the Second Amendment have to be rooted in the text of the amendment and be informed by history. Also, the same ruling struck down a means-to-an-end scrutiny guide that lower courts have often used to uphold state-level laws governing firearms.

"Defense Distributed claims that there is no historical tradition of regulating the tools or parts used to make private arms. This means there is no historical precedent for California's ban on CNC Machines & 3D Printers," Zero Hedge reported.