Buckley is an idiot. All the points he attempts to make have already been made about steel firearms. Schoolkids are not going to own a gun-capable 3D printer. The 3D printer from Staples will not be able to produce the gun, it's extrusion head cannot properly print the material required to make said weapon to tolerance.
If someone is going to shoot someone at school, it will not be with a multi thousand dollar
printed plastic gun, it will be with Mom or Dad's
unsecured Remington/Colt/Ruger/Smith and Wesson.
Defense Distributed did not make the Liberator so anyone can make one, they made it to prove that the government will try it's hardest to stifle anything it cannot control directly. The puppets in Washington set out to ban said weapon before it was ever finished, not because of the fact it was a gun, not for the fact that it was plastic, but because of the fact it was a free and radically open concept that showed the world that tangible goods could be made without profit, patents, copyrights and taxation
Essentially they see revenue slipping away, and the loss of money and control makes the government very nervous.
Scarlet Blossoms
Now I wonder what else they are going to print...
This is the exact thinking Defense Distributed had in mind when pursuing the 3D printed gun. If you can make a gun, what else can you make? The answer is 'just about anything'.
which is why the government has moved to control the very information about it