I have two PF-9s with hardchrome uppers. Both have functioned perfectly from the get-go. I had to replace the sights, since both shot well above point of aim out of the box, even with 100gr. Pow'rBall. The triggers suck, but they are MUCH better than those on P-11s. For the price, I think they are pretty hard to beat.
Mine shot just a little bit high maybe 3-4" but I was shooting at 10 yards. I do not know how to correct that?? File down the base of the rear sight? I know they sell shims to raise the rear sight.
Or like someones signature, "Aim low Sheriff they are riding Shetlands"