Re: 5 year old given rifle as gift, kills 2 year old sister
^A few minutes on Youtube will show you how fast someone can change magazines. Of course a novice won't be so fast, but I did say it took practice. Anyone who has practiced with a gun enough to actually hit their target and kill people in a mass shooting situation will be able to change magazines pretty quickly.
Computers are like the God of the Old Testament: lots of rules and no mercy.