Like I said a while back I don't recommend them for home defense or CCW, but they are a kick to shoot.
Incidentally, all this talk about derringers, caused me to go out and buy two Cobras one in .22 WMR and one in .22LR. They are a neat looking little firearm, however cheaply made as compared to my American Derringer in .38spl. Plus my American is double action only, and fairly accurate out to 10 yards.
The Cobras cost me the total sum of $274.00 out the door brand new in the box. Both shoot very poorly and the .22WMR key holes at 7+ yards. I called the factory which is in Salt Lake City Utah, and spoke to a factory rep. He told me that the rifling in both guns is very shallow, (which I noticed) and the barrel being so short as to distort the projectory. Other than that they fire each and every time I've fired them. The .22WMR is extremely noisy with a sharp report.
Neither would I consider carrying CCW or for home defense, but like was all ready said, they are neat little arms and a hoot to shoot. Further I got the satin nickel finish on both, on the .22WMR I got the rosewood grips, on the .22LR I got the white simulated pearl.