The basics of a 4473- and I'm going from memory, so help me out here, FFLs
Have you been convicted of a felony (crime that can be punished by a year of more in jail)
Have you been convicted of a crime of domestic violence?
Are you an unlawful user or addicted to controlled drugs?
Have you been ADJUDGED mentally incompetent?
Are you under indictment for a felony?
Are you a fugitive from justice? (warrant out for your arrest)
Are you an illegal alien? (Legal aliens CAN buy guns. If not a permanent resident (green card holder) they need to meet qualifications- like having a hunting license)
Have you been dishonorably discharged from the US military?
Have you renounced your US Citizenship (Thank you, Lee Harvey Oswald)
Are you the ACTUAL BUYER of the gun? (Your money, or did someone give you money to buy a gun for them?)
Other questions have to do with your identity- name, SSAN (optional) address, date/ place of birth, etc.