This is a great concealed carry. It is a 2 shot derringer made by Cobra. You load, fire one shot and the selector immediately goes to the other barrel. You don't have to flip a switch or anything. It comes with two sets of barrels. Switching them is easy and I can show you how. You can buy other barrels such as 9mm Luger at CobraPistols.net. It does have sights. Like most derringers, this one is single action only. $140. I'm open to trades including ammo and non-firearm items.