I honestly don’t know. Until late last year, I hadn’t even handled a Kel-Tec for 10+ years and my only experience with a recent one is my one Gen 2 SUB 2000 which, aside from being affected by the recall, has been fantastic. I read that Kel-Tec got their entire manufacturing process ISO certified in the last few years, so I imagine that helped things a lot. My wife works in aerospace manufacturing and getting (and maintaining) ISO certification is a HUGE deal.
Oh, and make that trouble with FOUR Kel-Tec Pistols. Aside from the crappy, unreliable P-32 and a first and second gen P3AT (all long gone), I still have a P-11 that was 100% reliable for a few years. Then it had a FTE. Trying to clear the malfunction caused a double feed. Why? Because the entire freakin’ extractor claw broke clean off and left the fired case in the chamber which, obviously, shut the gun down hard. So much for ever relying on that thing. Kel-Tec sent me an extractor and I fixed it, test fired it and put it in the safe. It hasn’t had a single round through it in over a decade.