Particularly in rural Arizona, given the upsurge in border violence, it’s likely that residents feel the need to defend themselves against drug predators, coyote gunmen or others. Yes, they can use semiautomatic rifles and shotguns, protected by the Second Amendment and unlikely to be banned by local law, but women generally don’t care to put in the training needed to master them. Nor can the elderly handle them adeptly.

For them, the Glock with a 33-round magazine is the weapon of maximum utility. You can load it on Sunday and shoot it all month. (Nobody wants to reload a gun while being shot at.) It’s light and easy to control. You don’t have to carry it or conceal it; it’s under the bed or in the drawer until needed. When the question arises of who needs an extended magazine, the answer is: the most defenseless of the defenseless.