It's been a bit over a year since the Ruger Mark IV has hit the dealers shelves. I've had a few cross my bench before, and then after, the "so-called" recall. Some of the Mark IV's that I've seen wouldn't do what the recall was called out for. As I started getting more into the "innards" of the Ruger Mark IV, I found a very puzzling part change with everyone of the pistols I had disassembled. The safety detent plunger is black plastic. Since 1949, Ruger has been using a steel thumb button safety detent, now, they figure a plastic one is OK? Check out the flat nose on the black plastic detent. It's only been employed for a short period of time. Kinda wonder if maybe that part could be the "real" issue. I do replace the plastic detents and recommend that to my customers, who all agree that they want a steel one instead.