They're are easy to conceal, reliable and honestly... they just look cool. They're not a revolver and not a semi automatic pistol. Derringers are their own special breed of handgun. Whatever your reason, if you’re looking to own a derringer, there are definitely some great options out there, including some that make great carry guns, or great range toys.
Bond Arms Inc. is an American firearms manufacturer located in Granbury, Texas which makes a nice lineup of well built, double-barrel derringers that sell at very reasonable prices. Many of which can be found right on the link below.
North American Arms is a United States company, headquartered in Provo, Utah, that manufactures semi automatic pocket pistols and derringers. The derringers/ mini revolvers produced by the company are five-shot, single action revolvers, which have a spur trigger design. They're similar to what you'd expect of a late 19th century pocket revolver, the main differences being their size and that NAA's mini-revolvers are made completely of stainless steel. The design of their mini-revolvers was developed by "Freedom Arms", which stopped selling these mini-revolvers in 1990 and then sold their design to North American Arms. Since then, North American Arms has further evolved the design, switching to a "safety cylinder" design, which features notches machined halfway between the chambers. As a result, the revolver may be safely carried with all 5 chambers loaded by resting the hammer in a safety notch. The older NAA mini-revolvers can be retrofitted with this "safety cylinder" design upgrade at no cost to the owner simply by returning an older design NAA mini-revolver to North American Arms for an upgrade.
The company manufactures their derringer /revolvers in the following calibers:
.22 Long Rifle
.22 Winchester Magnum Rimfire
.22 Black powder cap and ball
The cylinder must be removed from the frame to load or unload all NAA mini-revolvers, with the exception of the "Sidewinder" and "Ranger II" models; these models have a swing-out cylinder and a break open cylinder, respectively.
American Derringer Corporation is an American manufacturer of firearms, based in Waco, Texas. Available in every caliber, American Derringer offers a small size and weight with a big bore and the safety of a single action only firearm. Their derringers can be easily carried in a purse or pocket without the need of special clothing. American Derringer offer firearms ranging from .22 to .45-70/.410, and in every imaginable style. Check the link below for more detail and information