how does one go about buying a used firearm? i assume, as a first step, the serial number of the firearm needs to be checked with the FED. (i understand gun shops can do this for you for a fee.) after this, what paperwork is next? may deed of sale ba yan? is it like applying for a new firearms license? also, what things should one look out for? what needs to be checked with the gun before committing to buy? thanks in advance for your inputs. Wanna kill these ads? We can help!