I've heard lots of bad about their service , but that's the first bad thing I've heard about their product. I have one of their lowers with a Stag upper and have never had an issue with it. Granted, it's just the lower receiver.
Ill admit I've heard many say the same thing. Even if it was flukes, I cant recommend them via my experiences.
My two direct experiences were with a PSA LPK and a PSA BCG. The LPK was missing a couple of parts (disconnector spring and detent pins) which I had extras, no big deal. The disconnector itself was so far off spec, it would not sit in the trigger. PSA failed to accept the LPK back.
The BCG, simply was not of a quality finish. It was so rough with action, that it would cause lock ups and excessive heat. I had it sanded/polished to make it work following a refusal by PSA again for an exchange.
Again, I purchased these items within a month of each other during the height of the Obama sales pitch, so its most likely a simple issue of QA, but the refusal on the CS end left me with bad taste.