...printed guns can't make 10. They are not weapons, they are a political statement arguing that controlling the sale of guns is impossible because anybody can make one. It's not true, and the argument is literally blowing up in their face.
We certainly could control the sale of guns; the easiest and simplest way would be to kill every single human. A combination of engineered Ebola derivatives followed by mopping up with automated high-fallout nuclear weapons should do the trick, and you could probably set up for it in less than 50 years.
There are many other methods that would work too, but they would all be vastly more difficult, expensive and time consuming to implement. Universal human enslavement by near-omniscient robotic overlords, for example, would be very difficult to achieve. Forcible re-education of citizens and institutionalized culling of their children to eliminate all those intelligent enough to independently deduce the principles of firearms manufacture would take many generations.
So if you aren't merely posturing, and honestly do want total control of gun sales, maybe you should be campaigning for the extermination of mankind. It's clearly the most achievable real-world method of reaching your goal.