serial number vs. a number of records
If you mean where is a website that you can check to see if a gun is registered, there's not one.
You will have to check with the police.
Check airsoftmegastore.com
Contact your local police.
Be 18 for a long gun, 21 for a handgun. Do not have ANY criminal record. Do not have been adjudicated as mentally defective.
Very basically, they check to see if you are a felon, or if you have any disqualifying misdemeanors.
First, check to see that you have a BB gun, and not a pellet gun. Both pellets and BBs are made in .177 cal. A pellet gun will not shoot BBs (in most cases) If your gun IS a BB gun, you will need a gunsmith to check it for damage, stuck items in the barrel, etc.
Yes, Here in Canada the law is 500 fps and under. I would check around to see yours.
Check the auction sites to see what they are bringing.
State laws vary. Check with a local sporting goods store or gun shop. They will have all the information you need.
It possibly depends on the locality. In most U.S. states, there is no gun registration, so no, it won't. In Tennessee, a police officer can request to see if you have a gun carry permit when they run your Driver License number, but they can't check to see if you own a gun.
On line auctions are the best place to see what they are bringing.