80% kits are already illegal in California (as are 0% kits, if a solid rectangle of aluminum is marketed as being suitable for milling into a firearm)
(The answer is actually "yes, several".)
if a printing or milling job, or some combination of both, is split into many portions, until each portion is such a jigsaw puzzle, [perhaps literally] that it cant be filtered as its so non specific in form, that it could be anything.