Gun Control & RKBA

gang war usually means machine guns.

Not true either. Technically, Australia doesn't have any federal gun laws. Before the National Firearms Agreement, every state had some type of licensing and some had registration. The Howard government blackmailed the states to go along with what he wanted, which included banning most semi automatic and and pump action long guns. Guns are not entirely banned. In fact, there are more legal privately owned now than then. The Australian Federal Police has no clue how many illegal guns there are. We do know that one out of ten confiscated are basement made machine guns.

If you look at your graph, the largest drop was before the NFA went in effect. Unless you believe in retrocausality........... Also, while the gun suicide rate did drop, there is no evidence the NFA had anything to do with it. However, the suicide rate did not drop.
Out of the 15 peer reviewed studies on the effects the NFA had on Australia's murder and suicide rate, none of them say one had anything to do with another.

Yet Germany, Switerland, and Austria are high gun ownership rate countries. France is medium like New Zealand. Out of the countries you list, Austria has the laxest gun laws. In fact, their gun laws are laxer than Maryland, New Jersey, and New York.

No, we are not more violent. We just have more gangs. UK is actually more violent, and you are still comparing the US with countries that have less in common with us than South America.

You really are bad at this.