I'll personally never understand the general fascination with weapons of any kind, but these girls look hot.
Personally, I've always been fascinated by military history and military tech of all kinds (including guns and blades). Interestingly the idea of a hot chick using a weapon doesn't make her or the weapon any more sexy by themslves. I think it's more like ice cream on top of a brownie. Enjoying two things you love at the exact same time! ;D