In reading the opinion further, I have come to think that this case will not directly
impact any state gun laws or prohibitions. A strict reading of the US Constitution and the Bill of Rights makes it clear, at least to me, that the first 10 amendments were prohibitions on the Federal Government alone, and not against the states. The US Supreme Court has never incorporated 2A against the states as it has the 1st, 3rd, 4th, 5th and parts of the 6th and 7th. But, Scalia was brilliant in his opinion because he defined the rights protected by 2A as natural rights
, existing prior to the amendment and merely recognized and protected by it. If the foundation of other state constitutions is based upon the US Constitution and Natural Law, good arguments can be made against certain infringements.
Notwithstanding what happens at the federal level, many state constitutions have a Bill of Rights with a right to keep and bear arms. Colorado obviously does (Section 13) and it is not
subject to police power. Illinois does (Section 22) but it is
subject to police power. California does not have a constitutional provision protecting RKBA at all, so without Federal guideance S.F's ban will be harder to crack.