While this does indeed sound like a problem for Sweden and something they will have to fix, it's worth pointing out that by my calculation the US fatal assault by fire arm rate is 12X the rate that is causing a crisis in Sweden.
Could you share your calculation? Did you include suicides that are 2/3 of gun deaths in the US?
Source (https://www.pewresearch.org/short-reads/2023/04/26/what-the-...)