There's no doubt that the P80 build kit in question doesn't just walk a fine legal line, it runs straight up to it and pushes its nose through the proverbial fence, huffing and drooling in anticipation.
As we discourse on the matter, firstly I exhort everyone to refrain from using personal insults and slander in place of actual arguments, it is unbecoming of a gentleman or lady and is an affront to wisdom. For the debate over the prudence of background checks is valid, considering the practical reality of public opinion; the same is true when we discuss whether we ought to obey a law we consider to be injust or an affront to nature. Recall why Socrates refused to be broken out of jail.
Thr ATFs actions, Polymer80's actions and our discourse are part of that grand crucible where societal change takes place and philosophy evolves and advances, which has always been so essential to the pursuit of truth. We are having no different a conversation than what would have taken place thousands of years ago. So rejoice, because we're all taking part in a pretty awesome adventure on planet earth!
My take is this: David Borges and the Polymer80 team have done a great service in risking their security to challenge laws that are absolutely injust and injurious to the Constitution, and they deserve glory and veneration. For the philosophical underpinnings of gun control advanced by progressives over the last hundred years have been so utterly discredited, so completely vanquished as to leave do doubt in the mind of any wise person that the phrase 'shall not be infringed' could be anything but a most marvelous innovation. The prudence and foresight of the Framers with regards to the 2nd Amendment becomes more refulgent with each passing day.