Just one more aspect of firearms to keep in mind when the legislators want to "enhance public safety" using the "commonsense gun safety regulations" that only impose further restrictions on law-abiding firearms owners, and do nothing to stop criminals. I know that no matter how many facts we present to the liars it won't make any difference, but still, it's good for us to know the facts, just for our own satisfaction, and for possibly influencing some open-minded person who is either not yet informed and/or "on the fence" re restricting our rights. [Note: This survey does not include 3D printing nor 80% products.]

Review Beyond State Control: Improvised and Craft-produced Small Arms and Light Weapons firearms Small Arms Survey

http://gunwatch.blogspot.com/2018/12/review-beyond-state-control-improvised.html

Published on the Internet, November 4th, 2018, by the Small Arms Survey, paid for by the U.S. State Department Office of Weapons Removal and Abatement. 

Beyond State Control is an aptly titled study of improvised, homemade, and craft-produced firearms and light weapons around the world.

This is an important topic. It defines a floor beyond with controls are no longer effective. If people desire small arms, they will be able to obtain them by home manufacture, through improvised and craft-production.
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In the "Key Findings" there is this gem:

Improvised and craft-produced small arms account for a sizable proportion of weapons seized in domestic law enforcement operations in several countries. In the UK, some 80 per cent of all guns used in crime in 2011 and 2012 were improvised, craft-produced, or converted; in São Paulo, Brazil, 48 per cent of the sub-machine guns recovered during the same period were homemade; and in Indonesia, 98 percent of the guns confiscated from robbery suspects in 2013 were homemade.

"Gun Control" is promoted as a crime reduction measure in the Western world. That is how it was characterized in England in the 1920s and later. It is how it is promoted in the United States today. The ability of criminals and criminal enterprises to access effective, improvised, homemade, and craft-produced small arms creates a limit, determined by technology and physics, on how much crime can be reduced by limiting legal access to firearms.

Many millions of improvised and craft-produced small arms have and are being manufactured the world over. Craft-produced arms are becoming well known in international black markets.

If people desire small arms, their desires will be met by improvised and craft-production.  If they do not desire small arms, no controls are necessary. The arms produced may not be the most sophisticated weapons. They are sufficient for criminal activities.  There are few crimes committed with firearms in the United States that would not be accomplished with homemade pistols and sub-machine guns. The improvised and craft-produced arms are not subject to controls, and more likely to cause injury to users and bystanders.  Improvised and craft-produced firearms are more than sufficient to provide for the needs of the small class of violent criminals, as seen in Brazil.

Full report, downloadable pdf:

http://www.smallarmssurvey.org/fileadmin/docs/U-Reports/SAS-improvised-craft-weapons-report.pdf

One should consider P.A. Luty when looking at this subject and note that the Govt. wanted to brand him a "terrorist".  His passing is possibly the only thing that prevented this.  However, this is significant in highlighting what a Govt. can do with people who do not cow to them.

What is especially disturbing to me is society today has ignored history.  To summarize, the Founding Fathers by today's definitions were "terrorists" to the BRITISH EMPIRE.  I emphasize the empire because parts of society likes to argue for implementing concepts embraced there.  The fact that supporters of such concepts are in our Govt. is a slap in the face to our own history.

I agree that eliminating firearms is an impossibility, but getting to the point where this is the future of individually owned firearms...  It's likely the Govt. won't be the only problem we'll have at that point.

STOCKPILE AMMO. Guns can be made fairly easily, but brass cases, primers and powder would be impossible for people to make at home.  Right now you can download instructions (pdf files) on how to make pistols, rifles, break open shotguns, rocket launchers and sub machine guns at home without needing more than a welder, drill press, grinder and dremel tools.  No machine lathe needed, but having one would certainly be handy.  At the very least, go download and print these files now, before they get pulled.

There used to be a website called kaboom.com that showed how to make dozens of explosives using common easily bought supermarket items.  In fact, you probably have them in your house right now.  That site got shutdown within a week of 9-11.