Here an update: Things got squirly with the mounts. I have the P-223 Nikon scope (3x32) and still in search of QD mounts (AR is for range use only). I tried a UTG 1/2" mount but the scope wouldn't clear the rear sight. As I'd prefer to stay with a QD mount, either I'll get the same UTG rings but in 1" (I've had good luck with UTG) or I may succumb to using the individual P series rings (would prefer two rings vs a one piece/two ring set-up).

On a related note, I find it odd I can't find a picture on the 'net of an M&P AR15 with the Nikon 3x32 scope (that many praise) and the P-series mount. I just want to see the set-up that it clears the rear sight (or even with different mounts).