Just recently acquired a dirty, slightly rusted Kel-Tec P-3AT. After a lot of cleaning...(And I mean a lot, it made cleaning my first SKS caked in cosmoline without knowing about any method of removing it besides wiping it off look easy...)it still has some areas the bluing is missing and that are discolored on the outside...and the grips a bit chewed up...but it looks solid enough, no dings or pitting!
And at 50$ for it in the original box with the original manual, and 130 rounds for it...I couldn't pass it up!