This is largely machine guns and explosives. Pistols, rifles, etc are ordinary weapons in common use*
*NYC authorities may not agree
Sawed off shotguns seems arbitrary and that was ultimately my (pre-coffee) point; government is fine with coming up with an arbitrary restriction when they want.
They could outlaw the means of production. Gen pop is not allowed to own that.
Not only did jews have guns, but Polish jews had an entire military and state and that did not protect them.
Because guns do not protect you, other people willing to die for you protect you.