The RKBA is a fundamental right, protected (or not) by the state. "
A State has the (reserved) power to decide when a person is responsible enough to have a gun, just as when he's old enough to handle other deadly weapons. Determining the age of majority, consent, responsibility etc. is one of the few remaining (unstolen or undelegated) State powers.
Generally speaking, an unalienable right is a right that it would be immoral to take away without consent.
Sh*t. I should have kept reading further down the thread. The above statement is full of bovine scatological matter. A child's Rights are held in trust by their PARENTS, not the State. As such, upon reaching the age of majority, the child takes over advocacy of their own Rights. The only way a State can "remove" those Rights would be through criminal proceedings.
A State has the power to set the Age of Majority as agreed to by the people of that State. But due to the Second Amendment, upon reaching that age a person has full use of their Rights.
Responsible? Are you really sure that you want the capricious State we see today with its attendant abuses deciding who is "responsible"?
The state takes away life and liberty all the time without consent. They do it via individual due process in a court of law. Actually, that's the only way to negate an unalienable right.
We do not take each and every 16-year-old to court to determine if we may negate his individual RKBA. We say all 16-year-olds may not purchase or own a gun. You cannot do that with an unalienable right.