It might do a better job of segmenting gun sales to lawful and unlawful purchasers between the strictly-legal market and the black market, respectively, but I have trouble imagining how it would prevent anyone who wants a gun for evil purposes from acquiring a gun.
Another recent thread about background checks here: https://thefiringline.com/forums/sho...ght=background
“The egg hatched...” “...the egg hatched... and a hundred baby spiders came out...” (blade runner)
“Who are you?” “A friend. I'm here to prevent you from making a mistake.” “You have no idea what I'm doing here, friend.” “In specific terms, no, but I swore an oath to protect the world...” (continuum)
“It's a goal you won't understand until later. Your job is to make sure he doesn't achieve the goal.” (bsg)