I'm more into long guns but I am thinking about adding a handgun to the collection. I'm curious what your opinion is of what is the best SHTF handgun. Reliability (without constant cleaning) and ability to find compatible magazines and ammo if all production should cease would be the most important qualities I'm looking for. I would like something with decent stopping power that ammo is affordable enough to shoot from time to time. Also something small so that if I decided to carry it is easy to conceal would be a plus. By the way I am a total noob when it comes to handguns so assume I know nothing.