I Think I Like bARbie-15 Better

Sign of the Apocalypse #2: Hello Kitty AR-15 - Coolest Gadgets
It isn't an Evil Black Rifle, it is a Cute Pink Rifle. It is even legal in Kalifornia.

You can find the bARbie-15 here.

And for those who like the AK-47, there is also a Hello Kitty version of that rifle.