Great news! Now mentally disturb kids on Prozac looking to shoot up a class room don’t need to break into the parent gun cabinet...and no background checks or waiting periods! Just a $200 3D printer. Viva Technology!
Only an idiot would assert that a 3d printer of the capabilities we're talking about costs $200...
It may be a good thing...
A gun produced on a $200 3D printer would almost certainly blow up in the criminal's face...
Plans for hydrogen bombs are also easily found online! They were also available in bookstores previous to that.
Unless you were born before Methuselah, gangs have been building weapons since before you were born and the government has used every variation for propaganda.
See zip gun, Saturday Night Special, “plastic guns”, “cop killer” bullets, body armor; suppressors, “black rifles”, and any noun modified by “automatic,” “machine,” or “assault.”
Want to really have some fun? Look up the Arnarchist’s Cookbook. It makes a great gift for any Prozac-laden misfit. Allows their lives to serve a purpose: exemplifying Darwinism in a social construct.
You raise a red herring. In addition what part of “the right to keep and bare arms shall not be infringed “ do you find complicated?