My own favorite small pistol is the LLama X models, small little copies of the 1911 Colt, they come in .22, .32 and .380 caliber, with .380 my favorite for it's nice punch, and all models have good fitment into any standard cowboy boot. They are made in Spain, for the enjoyment of right wing authoritarian regimes throughout the world, and are a good choice if you are short on cash, as one can be had at most pawn shops for around $200. They are also easily hideable on a motorcycle, and fit nicely down a drain pipe if you have dispatched your spouse or her new friend, an all round good choice.