The Sanctity of the Second Amendment

From a reader:

We ask that all firearm owners put this on their wall. The Supreme Court of the United States has affirmed that the right to keep and bear arms is a fundamental right of the individual. If you believe in the 2nd Amendment, and you are not afraid to show it, re-post this!!! … I hope to see this re-posted by a lot of my friends. Remember, if we outlaw guns, then only outlaws will have guns!!!

My problem with the absolutism of these people is that they are unwilling or unable to differentiate between the right of a farmer in Wyoming to own a rifle, and some kid with a history of mental illness to own a cache of AR-15.

What about rocket-propelled grenades? Flame-throwers?  Surface-to-air missiles? Nuclear weapons?

A little sanity here would go a long way.