1. Kahr's Family of Pocket Pistols
Their concealed guns also go from tiny to not so tiny. It won't be hard to find a suitable holster for Kahr guns as well, and it's just hard to name only one of the Kahr guns for this list.
Photo Credit: Kahr Arms
The best part about Kahr is that the triggers are excellent for such a small concealed pistol. They also have sights to ensure you can hit your target at more than 2 feet away.
The form factor for a gun from Kahr (with a barrel length of just 2.5 inches) is perfect for concealed carry. It fits very well in any concealed holster.