I like Kel-Tec guns, and in fact I carry a P-11. This gun has had thousands of rounds threw it, and sadly I don't clean it often. Never a jam.
I used to have a SU16ca in 5.56x45. Once again, thousands of rounds and not a jam in sight. It was accurate too.
Kel-Tec guns are good for the MSRP that is set for them. They are ahead of the game often with their products.
Example: P3AT- pocket .380
PF9- small 9mm
SU16 series- light weight carbine that uses AR mags, with AK
PMR30- proof that there is a BIG market for a semi-auto, high
cap, double stack .22mag handgun.