I'm a firm believer in the two is one, one is none philosophy. Now, I'm not someone who believes that you need to carry 5 guns everywhere you go, but I do think there is merit to having a backup gun for various and sundry reasons. What guns do you think make for good choices in a backup gun role? To me, an NAA mini revolver is absolutely the perfect size for such a task, but I don't consider something that small and difficult to shoot a backup gun; it's more of a last ditch or hold out gun. Also, imo, a backup gun ideally should be chambered in or be able to shoot the same ammunition as your primary carry gun.