The Good:
The little Kel-Tecs are very easy to conceal, with very little weight or bulk. They are also very inexpensive.

The Bad and Ugly:
On the 2nd or 3rd round fired, the little bracket that the guide rod slides through fell out and disappeared. I’m told that Kel-Tec now makes slides without this piece, the bracket is a part of the slide, rather than a separate part.

More here.

Guns and Ammo have a review here.

I ran a couple of different types of ammo through the pistol, shooting as fast as I could recover. There is a distinct upward flip to the muzzle. You have to accept this in an auto so light, particularly when most of the weight is in the top half. Still, it was possible to keep six fast shots in a vital zone, and that is all the P-3AT is meant to do. In my hands, the pistol delivered the first shot about eight inches low and left of the remaining five. There were no malfunctions.