WarPig, I agree,, partially, yes the buyer should study up on what they're chasing. But weather or not PP&G did the work themselves or not, that doesn't need to be proven, they had an illegal gun, (yep, I'm sure they got stuck with it) they sold it AND THEY KNEW ABOUT IT. They did recieve several correspondences about it through GB during thier first posting and even acknowledge it in thier second description (although mildly). BATF doesn't investigate authenticity, they investigate violations of federal law, this looks like one of those to me! I understand your position on the matter, but there a few details that you're not aware of. This rifle has been featured on just about every major firearms forum there is.