This is a heads up for everyone now that PLR's are starting to become more available to everyone.
When I first tried shooting my PLR a few months ago, I had trouble with FTfires and FTE. Most seemed to happen with Wolf steel case ammo (I had a few hundred rounds someone gave me). I contacted Kel-Tec and they said DO NOT use anything other than brass cased ammo in their guns.
I had seen a caution about this in the rifle section of K-T's web site, but there was no mention on if in the PLR area, so I thought I'd pass it along. Anyway, if you've been having problems with ammo not firing or ejecting properly, check to see what you're using and stay away from steel or aluminum cased bullets.