Surely you know better than that.
https://reason.com/2016/03/22/australias-gun-buyback-created-a-violent/
Excerpt:
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."
But that defiance was mostly on the part of peaceful civilians who just
didn't want to bend their knees to politicians, and it was 20 years ago.
What about the bad actors supposedly targeted for disarmament by the
government?
Just days ago, Australia's Peter Dutton, Minister for Immigration and
Border Protection, and Michael Keenan, Minister for Justice, held a
joint press conference to announce "We don't tolerate gun smuggling in
Australia and we know Outlaw Motorcycle Gangs are engaged in it. We have
been keen to send the strongest possible message from Canberra that
we're not going to tolerate people smuggling in guns or smuggling in gun
parts. You'd appreciate that even one smuggled gun can do an enormous
amount of damage."
When politicians announce that they don't tolerate something, it's a
fair bet that the something is completely out of hand.
"Police admit they cannot eradicate a black market that is peddling
illegal guns to criminals," the Adelaide Advertiser conceded a few years
ago. "Motorcycle gang members and convicted criminals barred from buying
guns in South Australia have no difficulty obtaining illegal
firearms—including fully automatic weapons."