Why Red Flag Laws Won't Work.

[Fireball]

This is a completely different issue and is fantastically off point.  NZ has one of the higher firearms ownership rates in the developed world - the issue isn't access to firearms, it's a difference in firearms culture.

Boru

New Zealand requires a license to buy a gun.  New Zealand has also banned most semi-automatic weapons.  

America requires a background check that takes less than ten minutes unless of course, you're buying from an individual.  In which case, no background check required.  

Also, the estimated civilian firearm rate per 100 people:

US: 120.5
Second place Falkland Islands: 62.1 (Nearly half)
New Zealand (your choice) 26.3
Switzerland (in case its brought up) 27.6

There are more guns than people in the US, the ONLY country in the WORLD to have such a statistic.

Don't know about the rest of the US, but, "... transfer of ownership of any firearm requires transfer through a licensed California firearms dealer, as defined in Penal Code sections 26700 through 26915, per Penal Code sections 27545 and 28050 et seq."