OK, OK, ALREADY.....I didn't want to bore everyone w/ my Kel-Tec story, but if you insist........
My first (and last) Kel-Tec was a P-3AT a few years ago. Pretty soon (maybe 50 rnds or so) the cross-bolt pin / dissassembly pin worked it's way loose and the frame got all chewed up by the slide. So I sent it back to Kel-Tec and they put a new frame under it, with the same identical pin and same design. So I shot it some more, and paid close attention to the pin, and it kept working it's way out, but I'd catch it before it tore up the frame, and I'd push it back in. I got on KTOG (owner's forum) and found out LOTS of folks had the same problem !! But there was a "fix" which was for the owner to cut a deeper groove in the pin so the detent spring would actually hold it in place. Did that. Of course then the pin broke. Explained all this to Kel-Tec, and they sent me a new pin, which was IDENTICAL to all the previous pins, and yes, it still works it's way out.
Therefore, I'm not a Kel-Tec fan, because this is a VERY poor design, and Kel-Tec seems to have no plan (or desire) to correct it. As far as I can tell, their solution seems to be "Keep an eye on it, and push it back in when it starts to come out". That's unacceptable to me, and consequently I won't be buying any more Kel-Tec products. (Yes, I knew it was a cheapo-plastic-$200 thing when I bought it, and it's proved itself out to be just that...... and no, I don't want any more of them).
To the offended Kel-Tec owners.......sorry.....I didn't intend to slam you or your working guns. I hope you (and them) live happily ever after........
ps......I was just about to hit the "BUY" button at Bud's Gun Shop for a PM9 for $625 shipped, when they went "Out Of Stock"..... Anyone got a source that's better or equal?