Pocket pistols do not get much smaller than the Kahr P380. This used example is a compact in .380 ACP with adjustable sights and a pink finish.

The P380 is a thin, light pistol that disappears in a pocket or a small holster. It has a double-action-only trigger, which means each pull is the same length and weight. Most P380 pistols use a slim flush magazine. Match the holster to the exact model, because a loose fit is both slow and unsafe.

The adjustable sights are a bonus, since most pocket pistols have fixed sights that are hard to see. They let you tune the pistol to the ammunition you use. The pink color is a matter of taste, and it makes the gun easy to find in a bag or a purse.

A small .380 is a handy backup gun or a carry gun for warm weather, when heavy clothing is out of the question. Practice with it, since small pistols take work to shoot well. It is sold used and as described. It ships to your FFL dealer, and the background check is completed there.