Small, lightweight polymer-framed pistols that have only a double-action trigger for a safety have become popular, and I consider the Kel-Tec PF9 to be among the best. It is smaller and lighter than a Walther PPK but more powerful, as it shoots the 9mm Luger cartridge. At 14.5 ounces and .880 inch thick by 5¾ inches long and 4¼ inches high, this gun is a true pocket pistol. It rides easily inside the pocket of an El Paso Saddlery “Pocket Max” holster, which keeps it in a constant position for fast draw from the pocket, as well as breaks up...