I think my five shot NAA 22 magnum is considered a derringer.
NAA 22 Magnum?
Nice looking little revolver. And it actually does look like a derringer.
And a bonus, 22 Magnum is a pretty lethal round in the right hands. Certainly easy to conceal.
Good choice.
Follow up story:
IL:Highland woman says she shot intruder to save her sister’s life
http://www.freerepublic.com/focus/f-news/2987772/posts
I mentioned MHGinTN