I forgot who sent me this but thank you! 
By Miguel.GFZ
Semi-retired like Vito Corleone before the heart attack. Consiglieri to J.Kb and AWA. I lived in a Gun Control Paradise: It sucked and got people killed. I do believe that Freedom scares the political elites.
😆😆😆
I am convinced that the ATF social media pages primarily exist to collect a list of names of people who hat the ATF. Those are basically the only comments those pages get 😀
Why on earth would SHOTshow even give or sell them booth space?
Profit! And hey, it could be fun to have them there?
Dunk tank setup? Put them next to the booth selling banana cream pies? The possibilities are endless.
Money.
Meanwhile, DD is reportedly also at SHOT showing off their new “zero percent” GhostGunner machine. In other words, a CNC machine that turns a plain block of metal into a receiver. They say that AFT has made up new rules abolishing the 80% thing, so this is their fix.
The ATF did issue a notice of proposed rule making that would re-define what constitutes a firearm to include 80% lowers/frames. They used terms like “readily” turned into a firearm, and “common tools.” That definition was broad enough to encompass all 80% receivers.
They would not be outlawing 80% receivers, but would require serialization and a FFL transfer for purchase. Which is not “abolishing” 80% receivers, but it is making the 80% receiver industry equivalent to a conventional FFL dealer. Which is in effect destroying the 80% industry.
I would not be surprised to see a lot of 80% dealers come up with similar jigs/tooling. Your new home built AR receiver will not look as polished as it does today, but it will still function.
So how does “readily turned into a firearm” and “common tools” not apply to metal bars and CNC machines? Those regulations seen to apply equally well to zero percent.
For some definitino of “readily” you don’t even need CNC. A manual mill can be used to make a working firearm. I’d hate to try it myself but I know Arne Boberg can do it.
Which was the point of the comments I submitted on the proposed rule. Without clear definitions, it becomes arbitrary and capricious.
I think, at this point, the ATF could make the argument that a hand drill, a Dremel, and some sandpaper are common tools. Even if you do not have them, they can be had for a price palatable to most people. Or borrowed from pretty much anyone out there.
That sets them apart from milling lathes and CNC machines.
But… until “common” is clearly defined, the ATF is the judge of what that means, and it can change whenever they want it to.
As I recall, the tools you mention are the ones used by Khyber Pass gunsmiths to make replica AK47s.