The general consensus is that the 2nd amendment protects peoples rights to own guns. There is also a long standing tradition with people owning guns, and its considered a right. So even if they are wrong, the 9th amendment says, just because your rights are not writen down, doesn't mean they aren't protected under the law.

Thus anyone if someone argues, the right to own a gun isn't written down, you point first to the 2nd amendment and if they say thats wrong, you point to the 9th.

Anyway, its kind of silly to say your allowed to form a militia but your not allowed to own any weapons that are capable of defeating an oppressive government. You just said the point was to defend themself from an overbearing federal government, yet they are not allowed to own any guns?

If something is illegal for the government to own, of course the people shouldn't have them either. But if the government can have tanks and stuff I don't see a problem allowing the population to have machine guns.