No matter what ammo I use, no matter which magazines I use, and even after a new factory extractor from Kel-Tec, my POS still cannot get through a magazine of ammo without having FTE's and/or FTF's. One of the guys out at the range said a local gunsmith has a mod to the gas system that he can do that will allow the SU's to use any ammo (cheap or expensive) and never have a problem again. They said its $100 for the mod.
Anyone else having this problem as frequently as I am? Kel-Tec told me if I'm having that many problems I should send it back to them and let them check it out. But the turn around time sucks.