It wasn’t just 1 shooting that motivated it, and you clearly must know that, so why are you trying to sell a false narrative? This will save lives as well. It isn’t a full solution though. This will mitigate immediate crimes of passion using guns by people who don’t currently own them. The number of people who go out and buy a gun when upset to shoot someone is non-zero. The number of people who have calmed down enough 3 days later will hopefully also be non-zero. Florida always had a longer period for such.