I once saw a documentary about black market gun makers in Pakistan, who, without any power-tools at all, can manufacture working replicas of most any modern firearm. In urban-industrial countries, where there is no shortage of metal-removing machines, machine tools, or raw materials, so much more is possible. During the CIA-sponsored war in Nicaragua, CIA set up small-arms manufacturing shops on a Southern California Indian reservation, and produced rifles, pistols, and machineguns, to ship to the Contras. (They had to make their own, to get around Congress cutting off the arms supply). And all of them were free of any identifying marks, or serial numbers.So far as ammunition goes, spent brass for reloading, is in practically endless supply. So, if the modern-day "redcoats" try to steal our guns, we can always manufacture them. That goes for Australians, and Britons too, where there probably already are underground small arms workshops in existence. There was an author named Bill Holmes, who wrote a slew of books on how to manufacture your own guns, out of scrap metal. His books are probably still available on Amazon. You can outlaw anything you want. But you can't outlaw Knowledge! One question: Since you are in Australia, why are you so eager to see the American working class disarmed?