The nuclear option a few years ago specifically exempted the Supreme Court. It did include no more filibuster of lower courts, but the Repubs have now invoked different rules to essentially delay any damn thing they want to delay, including lower court appointments with no need to use the filibuster. Are you really paranoid enough to believe your right to own a gun is in danger of being completely taken away by ANY Supreme Court? With luck, you may lose the "right" to take it into a place regardless of the "right" of other people in that place don't want it and the states and local governments might regain some control (strange how right wingers are all for local control unless local control means their desires might not prevail...then, the Feds need to take over), but that is about it.