wonder if anyone has ever made a 3 or 4 shot DA revolver?
These were close...
I forget the name but it seems like it would have to have been this one, the COP .357 Derringer.
Thirty years back I had a Texas motorcycle buddy that packed one of these everywhere, swore by it. As I recollect though in stainless as it was it was heavier than and near as bulky as a regular Airweight j-frame. Double action, IIRC there was a rotating firing pin gizmo that hit each barrel, one after the other, every time the trigger was pulled.
But, just like with a SxS shotgun, in this case I think the just looks of them four muzzles at the business end counted for a lot.
Birdwatcher