But just what is an "illegal gun"? Guns that are very tightly controlled for civilians, like machine guns and cannons? Well, no--apparently not, because not only are such weapons almost never used criminally in the U.S., but the various gun laws MAIG advocates, like closing the "gun show loophole," and denying gun sales to anyone the Attorney General designates as a "suspected terrorist," have nothing to do with such weapons.
No--"illegal guns" are simply guns that are illegally owned, by virtue of either the owner being a "prohibited person," or a lack of the required paperwork (for jurisdictions that require such things). The interesting thing about that is that many of the same people who claim only to be against "illegal guns," rather than against the Second Amendment, claim that proponents of tough immigration law enforcement are "anti-immigrant." In fact, if one looks through the list of cities that MAIG claims as members, and compares that to a list of "sanctuary cities," where city employees are instructed not to cooperate with federal enforcement of immigration laws, one will find quite a lot of overlap.Go read the rest of this excellent article. Hofmann has it.