Yes, if you live in 1700. In 2012, not so much. And especially not at all in the US, which is HUGE, segregated into states, and the government has the biggest military power in history.
With a gun you're not even a match for the police, much less the government.
Actually, you only get to have weapons because the government allows you too.
If tomorrow the government decided to forbid private weapons, the writer would have returned his weapon pronto or face jail time or being shot by the police.
In that case (which is not very far-fetched) I don't see him fighting with his weapon for what he considers his right at all. Does anybody?