I have no accuracy issues with my early manufacture fullsize M&P9 related with the pistol itself. Frankly, it is more accurate than I can shoot it. However, I've seen enough reports in enough places that I believe some fullsize M&P9s are having real accuracy issues.
Hopefully S&W will make everything right for everyone with a problem pistol. It certainly will be more difficult than shipping out a new striker. I would feel much better about purchasing another fs M&P9 if they took the problem head-on...

Nak, I hope they resolve your problem.