I know it ain't BP, but it is interesting:
It is pretty much an updated version of a derringer I guess. It is in .45 ACP. You can also get a replacement barrel in 9mm. You are limited to anything but +P or +P+. But when it comes to .45 ACP, it is basically a subsonic cartridge so no problem there. With all my problems with the wife's injury, I have not shot it yet.
It chambers two rounds and has two more in the grip handle. It is a great concealed carry gun. I had more photos, but my cloud isn't working now.
Ok got it working:
I also bought a rubber practice grip:
