If a politician advocates for the “Australian Model of gun control” be sure to inform everyone of the “Australian Compliance Model of gun control”:
In Australia, part of the supply of banned firearms comes from defiance of the original prohibition. The Sporting Shooters’ Association of Australia estimates compliance with the “buyback” at 19 percent.
Other researchers agree. In a white paper on the results of gun control efforts around the world, Franz Csaszar, a professor of criminology at the University of Vienna, Austria, gives examples of large-scale non-compliance with the ban. He points out, “In Australia it is estimated that only about 20% of all banned self-loading rifles have been given up to the authorities.”
You might also speculate that would be an upper bound for the U.S. and that U.S. gun owners might not be nearly as “polite” about it as the Aussies.