Bought one a couple months ago with a November birthday hoping the previous issues had been rectified. Out of the box it seemed to be soaked with oil. After field stripping, wiping it down to remove the excess oil, and swabbing the barrel I started with Remington 115 grain FMJ. First round, CLICK. This occurred 3 more times in the first 100 rounds. Of the first 30 rounds that fired the slide failed to return to battery each time. At this point it was field stripped and wiped down again. Over the next 70 rounds there were 4 or 5 more failures to return to battery. Rounds 101 to 150 were flawless in function. After this first session it was thoroughly cleaned and the rails very lightly lubed with Rig grease. The next time out consisted of 100 rounds of 115 grain Remington, Winchester white box, and reloads, with no repetition of the previous problems, apparently requiring some degree of break-in. Primer swipe by the firing pin has been mentioned and is present, although examination and comparison of every 50th round shows no progression thus far.
Although only getting started with a limited number of rounds and a rocky start it does seem promising. Personally the grip will require some time to become accustomed. Sorry to be so long winded but that has been my experience to this point.