The militia of a state, and states' rights.
A hypothetical militia, not callable to federal service, could be used to restrict labor market participants available for foreign entanglements by the federal government. From this perspective, it is inferred that an application of nullification theory would solve a form of problem of a lack of balance between the several states and the federal interstate government. This could be considered a form of arbitrage; between the several states, and the interstate federal government?
A well regulated militia could be used by the state to ensure its domestic tranquility, provide for the common Defense of the state, and especially to use that disciplined body, in cases of natural disasters.
If we consider it from the perspective just presented, The Second Amendment can be considered a form of states' rights, to the extent it is organic to the state; and, that it can ensure the domestic tranquility (in a manner consistent with) the traditional power of a State.