I hear that "cooling off period", but it makes me think that if a person doesn't have a gun at the moment and want to kill someone, that's where the knife, blunt object" hands and feet murders come into play. That seems way more likely than someone driving to the gunstore, picking out a gun, going through the background check, driving back and killing the victim. If they did that, they just set themselves up for a 1st degree murder charge.