[PreviouslyA-Lurker]

Okay, I guess I'll have to keep it at home. My purse is big, but not THAT big. Dang it, I work in a bad neighborhood too.

[LibWhacker]

We could reduce the diameter to six inches and still get you a muzzle velocity of 1,000 ft/sec if you were willing to carry around a rotating steel or titanium disk that was spinning at 40,000 rpm. You'd have to carry around a motor, too. :-)

I dunno . . . I think it'd make me kinda nervous . . . What if a bearing burned up and it blew up? 'Course, like Frohickey said, you could start it up every time you needed it. Would take a couple of minutes to get up to speed, though, useless for self defense. And you'd still have to carry some kind of motor around with you! :-)