IQ evaluation wouldnt help. Even smart people shoot themselves occasionally. Safety in handling weapons is a constant mindset. But....one day soon private sales, person to person,  will be implemented and tracked by FEDS as gun stores do records tracking now, due to idiots like this. You will have to notify police anytime an individual buy/sells a weapon to another because of gun thefts and sales to thugs. We loose privacy but it wont stop thugs from getting hands on guns. That will never happen.  This is  a loss for others who are responsible and value privacy.