The second amendment protects the gun rights of individuals in a particular group. The gun rights of individuals outside this particular group are protected by their state constitution.
And there's the opening for the "Supremacy Clause" arguments that will surely follow once we accept that proposition.
An army composed of ordinary citizens rather than professional soldiers.
A military force that is not part of a regular army and is subject to call for service in an emergency.
The whole body of physically fit civilians eligible by law for military service.
[Latin mīlitia, warfare, military service, from mīles, mīlit-, soldier.]
This the group you talking about being protected by the 2nd?