I've heard of the amount of rounds a person had on them at the time of a defensive shooting being brought up in court to show the defendant's intent was "looking for a war." Why would one need so many rounds on them unless they were looking for trouble? But the fact is you need extra rounds and mags to deal with malfunctions more then actually having to deploy them. One mag with six rounds could easily turn into a gun that doesn't work and no way to fix it.