I got my new PC shield out this week and had no issues with accuracy. Shot 50 rounds from 7 and 15 yards to get the pictured target. Also ran a 25 round off duty qual with it, but didn't get a pic of the target.
P. S. The two that were low were from me shooting fast and jerking the trigger a tad.
I just picked up a shield 40 yesterday and tested it out today. It was low and to the left about 5 inches at only about 12-15 yards. Looking at it closer I see the factory sent it out with the back sight perfectly aligned but the front is probably more than a MM off to the right. I picked up a 45c and it was dead on and I have a 9c and 40c and they are close to perfect at 25 yards. My wifes 9mm shield is just crazy. I can hit a 4 inch plate at 25 yards in 3 to 5 shots out of six. so Far all my M&Ps have been more accurate for me than a couple of glocks I had but I still my pickup a 20 in the near future for some 10mm fun. : )
Another accurate Shield owner. Stock.
At 10 yards, slow fire, I keep 10 out of 10 in a 4 inch circle, right on POI. I keep 8 out of 10 in a 3 inch circle. Double taps I keep in the 9 ring of a B-27 target.