Instructions
Call local police to check on local law and whether it's legal to transfer the handgun. Some states prohibit the ownership of certain types of handguns or have specific rules for transfers between private individuals.
Get full identification, including proof of age and residency, from the buyer. Under federal law, the owner of a gun cannot sell it to a known felon or someone disqualified from owning the firearm.
Complete paperwork required in your state. Even if your state does not require it, write down the buyer's identifying information, the type and serial number of the firearm, complete information about the place, date and time of the sale and the selling price. Have him sign the sheet. While not legally necessary in all states, this information may prove important if there is ever a question about the transaction.
Accept the payment and provide a receipt.