Depends on what you mean by automatic guns, and the law where you live. You did not tell us where that is, so there is no way we can answer. Where I live you CAN legally own fully automatic firearms (machine guns) but they are horribly expensive. An M16 rifle that may be owned by a private citizen is between $12,000 and $16,000.
Yes, with the very few exceptions of certain older automatic mechanical guns.
In Canada, the kinds of guns that shops are allowed to carry for sale are only hand guns and semi-automatic guns. Fully automatic guns are not allowed to be sold.
Automatic Electric Gun - i.e. airsoft toys guns.
No dials on automatic guns.
Yes, a few. But they are low quality guns.
Colt Automatic Rifle
Get some cannons and automatic guns
1884 for machine guns.
Yes, you can ship semi automatic bb guns to new zealand but not fully automatic ones
A rapid fire mod is a mod that makes semi-automatic guns automatic
Ranges, certain situations.
Ruger, Marlin, Winchester, Colt