Trigger sucks. Heavy, long pull with nothing resembling "crispness" at all. Signifigant creep.
"sights" aren't great.
Outside of that, it's fine. It does precisely what it was meant to do, which was to be a reliable, easily concealed pocket gun. A good trigger isn't exactly a requirement when your shooting at the ranges that I think the Kel-Tec is most suited to (maybe a couple feet past outstretched arm and in), and sights, again, aren't really necessary at that range, although I still wish it actually had good sights. I would recommend one, but those are the problems that I have with it.