How bout making one of these? Cant recall the correct name/term for them at the moment, but it is kinda funky, and unless you are in the Polish Resistance in WWII, or are a serious masochist, it is pretty useless.
Not a pistol/revolver like you asked for, but it gets fired like one, if that counts for anything.
ETA: Apparently I do recall the name. Obrez. That's what I was lokking for there.