The justices on the US Supreme Court aren’t the final answer on our right to use and have arms. Neither is the Constitution as it merely recognizes that right, and other rights as preexisting our government.
The rights are those of free and independent American people who came together to form a government for and of free people, one that respects rights as well as sets responsibilities (pay taxes, follow the law, take care of yourselves and your children, come together for common defense, elect honest representatives, etc.).
If the court or the government infringes on our rights, we have the power and duty to correct or change that government. Our power includes the use of votes and if necessary, our arms.