This truly depends on your area. If you are in a place, say like New York City, you will most likely be called out on it and the police will come. However if you are in a smaller area with a more rural setting like Ithica, then you should be fine.
Legally it's more of a gray area but generally some officers do have knowledge of paintball markers and recognizes them as not firearms, and may choose not to enforce airgun laws. However, it's up to you to be a responsible owner - as long as you only use it in at paintball facilities, store it safely in your home like as if you would an actual firearm, and not brandishing it out in public areas you are fine.
Officially under the firearm laws in NYC paintball markers are illegal, but usually the case is that this part of the law is not always enforced (some police officers do actually play paintball as well so they won't be too harsh on a casual paintballer). In any case, treat your paintball marker as if you would do with a firearm - disconnect the air supply and make sure there are no paintballs in the chamber, and if needed, remove the barrel and store them in a sturdy container that doesn't reveal its contents.
Yes it is perfectly legal to own a paintball gun in NY. Some of the best teams come from NY. NY also has over 40 fields.
There is not licencing for paintball markers.
12
There is no liscencing for paintball guns in the US.
yes. you can ship a paintball gun anywhere.
Paintball is not illegal in Japan. You can play at the related link.
Only if you own the property or have the owners permission.
kinda
No. A paintball gun is not considered a fire arm anywhere because it does not use an explosion to propel a metal object.
The legal age is 10.
yes I've been to an paintball field in clark county
No, 11 is the minimum age to play, and paintball guns are not lethal.