A machine gun that "it's nearly impossible to prevent its production"

Gun control advocates don't seem to realize how gun control laws primarily prevent law-abiding citizens, not criminals from getting guns.  It isn't just an issue of smuggling guns.  It is also a question of being able to produce them, even machine guns.  Israel can't stop domestic terrorists from making their own machine guns.  From The Times of Israel:

The homemade or craft-produced rudimentary automatic weapon has been used in the majority of shooting attacks on Israeli civilians and security personnel. It’s not accurate and it has a limited range, but it’s cheap and more than powerful enough to cause mayhem and death — and it’s nearly impossible to prevent its production. . . . 

While some more advanced rifles and firearms require specialized tools, the Carlo has remained so popular because of how little machinery and technical know-how is required to produce it, according to N.R. Jenzen-Jones, director of Armament Research Services (ARES), a specialized technical intelligence consultancy. 

A drill press, some welding equipment and blueprints from the internet are all that’s needed to create one of these potentially devastating weapons, a fact that presents a real challenge for Israel and countries around the world that are trying to prevent such guns from winding up in the hands of terrorists and criminals. . . .