This is how hypocritical are Govts are
when the police moved away from revolvers to Glock semi-automatic pistols the used revolvers where shipped to America to be sold on the second hand market
and this was the reason behind buying Glocks given at that time
http://www.parliament.nsw.gov.au/pro.../LA19960418023
it seems the revolver was an outdated inefficient deterrent
Probably enough said by me, the issue can only be resolved in the USA, personally I believe the laws in Australia are sufficient but not uniform across Australia. I also think the police should move away from licensing the gun and more towards licensing the owner.
ps: I forgot to mention that some of the guns that were purchased in the buy back scheme ended up back on the second hand market