Actually, read the Parker decision. They quote one of her decisions wherein a BoR protected Right was ruled being off limits to both the Feds and the States.
What we have now are 50 different States with hundreds of different standards for what should be an inalienable Right to keep and bear arms. Trash them all for a "shall not be infringed" SCOTUS ruling and all 300 million of us not subject to incarceration or commitment would be restored in our Right.
If the SCOTUS doesn't rule that way, then we still have options.
"Arms in the hands of the citizens may be used at individual discretion for the defense of the country, the overthrow of tyranny or private self-defense." - John Adams, A Defense of the Constitutions of Government of the United States of America, 1787-88
Quote her.