Spontanious Human Combustian was almost certainly prooven to be a process where an external flame source such as a candle lit the persons clothing and their body fat acted like a wick. That's why in all cases, the legs are left due to the poor fat>ratio.
But - I live in the UK where guns are illegal PERIOD. You cannot own any firearm unless you have a specific need for one (farmers and park rangers). There're also only parts of the country where armed police are being TESTED.
The problem though is that guns are getting imported from other countries for use in Drug/Gang related crime
My friend is from Michigan and he once said to me that he was suprised and alarmed that people weren't allowed guns and that he mis-trusted our government for not letting us carry them. As he put it "An armed community is a polite community" but if you've ever been to Birmingham - the community consist of a large amount of armed gangs that frequently war with one another.
But I personally feel safer knowing that some of the people I know don't have commercial access to weapons - and probably won't ever make the connections needed to import weaponary of this state - where-as I hear it's relatively easy to purchase, or inherit by other means, a firearm in the US