Kel-Tec guns are, well... Kel-Tec is like the Hyundai of the gun world. They're a budget-priced brand, which means you get budget-priced quality control, fit and finish, and so forth. Mind you, Kel-Tec of 2012 is a much bigger company and has much better quality than Kel-Tec of 1992. But gun folks have long memories... we're still mocking HK for a catalog they published in the late `90s were the ammunition was loaded into the magazine backward, many of us are still miffed at Smith & Wesson for the trigger locks of the `90s, and... well... our worship of John Moses Browning (Praise Be Unto Him!) is kinda creepy.
I own an early production run P3AT, bought it used (with less than 50 rounds through it for 60% of retail!), and it had some failure to feed problems during my break in of it. The pistol was still under warranty, even though I wasn't the original owner, they fixed it for me pretty quick. It's very reliable and my daily carry. I've also been lusting after a
KSG shotgun, which has been getting excellent reviews and might just be the most Shadowrun-y gun I've ever come across in real life.
Edit to Add: The
RFB is also a very neat gun. Very hard to find though, massive backorder even years after it was released.