This varies from state to state, with different rules applying to handguns and long guns. Some states are really draconian; others quite liberal. From the perspective of the federal government (and thus applying to all states), a handgun can only be transferred through an Federal Firearms Licensee (i.e., licensed gun dealer). Rifles with barrels of 15" or more and shotguns with barrels over 18" can be sold privately. Shorter barreled long arms and fully automatic weapons are subject to totally different rules and can only be transferred by a Class III FFL dealer, require a payment of $200, and a very extensive background check.
The gun and a receipt from the dealer.
you have to be licensed to sell hand guns.
I think this is illegal and I think you arent allowed to sell to anyone not licences as checks need to be made
depends on where you are, but you can always take it to a gun dealer and have them sell it for you. Procedure varies from state to state.
Check with stores that sell BB guns.
Sites such as Craigslist, eBay, or local classified is the best place to sell your gun for a low price.
Yes they do sell gun safes along with many other things at Cabala's. There is also a gun library at Cabala's.
You can sell it at a gun show, you can sell it through classified ads (if your state permits it), you can sell it on consignment at a gun shop or sell it to the gun shop, you can sell it online at websites such as Gun Broker/Auction Arms/Guns America/Cheaper Than Dirt Classified ads, or you can post "WTS (Want to Sell)" ads on forums, or you could even sell it at a garage sale if you so wished.
No.
gun shop, ebay, gunpartscorp
Gun store.
There is no universal system that is open to non-law enforcement personnel to check such matters. A police officer can check, but will need to have the gun to do so.