Seems kinda silly. Leaving aside they ship guns between FFLs, they deliver knives, knife maintenance tools, tomahawks, swords, and a number of other items that are already fully functioning weapons to individuals without the hand wringing, not to mention 80% lowers. Whoops, maybe 80% lowers will be the next on their list of "Things we don't like."
That was my take on it, you will ship a entire gun, and all the parts to make one, but get in a twist about a aluminum mill, cause that is all this is, any mill can do exactly the same thing. this one is just small and cheaper, but it is still $1500