Not in the US, but registry is required for ownership or possession of certain types of guns.
It is legal to own a BB gun in Champaign, but it is illegal to use one within the city.
Basically none. Those made by a company or country are legal. An individual can make on that is illegal to own.
Depending on where you are, guns are NOT illegal.
No they are not illegal, but you have to be 18 or over or have a firearms license to purchase one. But you can own one at the age of 12.
Cap guns are illegal in Rhode Island.
Illegal firearms are very rare, compared to the number of legal firearms in existence. Roughly half the households in the US own at least one firearm legally.
Depends on the game laws in your state. Each state has their own laws. Legal in one state is illegal in another.
Australia requires you to have a category "A" firearm license to own a BB gun
Guns are illegal for any age in England, unless you are a police officer.
Presumably legal. There are no solid statistics to indicate what the number of illegal guns are - it can only be estimated. Also, there are very few guns that are illegal. This would include only machine guns and destructive devices without proper paperwork. Most guns used in crime are legal to own by normal people, but in possession of what is called a "prohibited person". Felons may not possess guns, but it is the felon status that makes this a crime, not the gun.
no, a paintball marker should not be illegal in any town to own, however some towns will not allow the discharge of a marker.
BB guns and airsoft guns are legal, but it may be illegal to transport them, especially to handle them if they are looking like 'real' guns.