What type of crime? USA seems ahead with nearly all crimes that I can find. Some of the starkest differences in suicide and homicide (by guns).there have been studies done/books written showing that frequently, having more citizens with concealed carry permits actually did cut down certain types of crime. taking away honest citizens best self-defense option against violent crime would look, on the face of it, to be giving offenders insurance that they will get away with their crimes safely...is that the message we want to send? "ah, go ahead & mug the old couple. it aint like he can defend himself & his wife from you boys. we know you gotta make a living somehow..."
bad shit? nothing you can do to prevent it. might as well pass a law requiring the sun to rise at 3 AM from now on...
Firearm death rate in Oz per 100,000 is 0.11
Firearm death rate in Us per 100,000 is 4.46
Suicide rate...............Oz...................0.76
Suicide rate...............US...................7.32
https://en.wikipedia.org/wiki/List_of_countries_by_firearm-related_death_rate
https://www.nationmaster.com/country-info/compare/Australia/United-States/Crime
https://www.nationmaster.com/country-info/compare/Australia/United-States/Crime/Violent-crime