Before the recent set of court rulings, private ownership of a pistol was indeed completely illegal with no exceptions in Chicago and Washington, DC. Several other jurisdictions are almost as strict - as of the last time I read up on it, in NYC, it is illegal to even touch a pistol which is not registered to you, which is a lengthy and complex process.
Yes, but neither of those is a State, and as you pointed out, those restrictions have been modified by recent court rulings.
But not to quibble over details... all I was originally saying is that, for whatever reason, laws on owning certain non-firearm weapons (switchblades, nunchuka, brass knuckles, saps, etc.) seem to vary wildly, whereas in general firearms ownership is legal in the entire United States.
It is an interesting situation, to be able to own, say, an AR15 or a 1911 pistol, while simultaneously not being able to own brass knuckles.