I think that's a very generous assumption considering that strict gun control laws mostly correlates with population density. Gun laws vary a lot from state to state and in most states that have some sort of licensing requirement anyone below the top half of the middle class would have to invest a non-trivial (a little more/less than a driver's license) amount of time and money into owning any sort of firearm. I know in the Boston area the unwritten policy is "municipalities inside I495 typically don't issue concealed carry permits unless you're a cop or politically connected" Basically state laws can skew things a lot.