It must be quality control issuse at Kel-Tec. Some of their stuff works like clockwork and i would count on it as a carry weapon. Others, sometimes of the same model, isnt fit for a paperweight. That also leads to many debates, two people, both being, honest, get into a gunfight because one says, hey the bang bang model works, and the other, knows, they won't even go bang bang. They do seem to have a decent attitude towards repairs, if it's new, send it back and wait. There again, sometimes it comes right back fixed, other times it takes weeks.
good luck