The law requires the FBI to complete the checks within 3 business days. If the check isn't completed on-time the seller sells the gun anyway.
The Brady law says you can't get a gun if you have a felony, arrest warrant, documented drug problem, disqualifying mental illness, illegal alien, dishonorable military discharge, renounced U.S. citizenship, restraining order, domestic violence conviction, or an indictment for any crime with a one year sentence.
The number of people failing the check between 1998 and 2013 is 1,044,050.
About 110 million legal gun owners own between 270 million to 310 million guns in the USA. Of course there's no way to count the number of ILLEGAL guns out there..
