yes
yes, you can and need a license to own an airsoft gun in nyc.
No, you do not need a licence for airsoft guns in the US.
You do not need licenses for airsoft guns, as they are not firearms.
No
Unless it is electric.
No but You Have to be over 18 for most airsoft guns.
No you do not need to put air in an airsoft gun. These guns are either spring powered where you must cock the gun before you shoot it, electric powered which are automatic and require batteries, or CO2 powered which requires a CO2 cartridge. This CO2 is not expensive and a pack of 40 CO2 cartridges costs only 20-25 dollars. the guns that require CO2 are not as common as the other forms of airsoft guns, although they are more powerful. In general, if you buy an airsoft gun, you do not need to put any air into it.
No
No, I dont think you would need to have a licence for buying a airsoft gun but it may vary in what state you live in. I buy all my airsoft guns from budk.com
Yes - airsoft toy guns are federally classified as firearms in Australia, so you will need the same license as for a lethal weapon.http://www.airsoftaustralia.com.au/
Most do not but there are electric guns.
There is no licencing anywhere for airsoft guns.