The only Cobra that I've ever used was a .38 Spl derringer. For what it was it was great. I wish I'd never sold it. It wasn't fancy, but never failed to fire, and I got to the point where anything inside 10 yds was hit, and I actually could hit a 6 ft round hay bale at 50 yds consistantly with it. Some of the autos are built like the old Davis, and Lorcin guns, while some of the newer models look like Kel-Tec's and Taurus', but are NOT anywhere near the quality, They really feel cheap. Can't say how they shoot or if they're reliable though, but I do like the derringers. They come in a variety of calibers from .22lr to .38 spl.