Originally Posted by Luger9x19

The Burris PEPR mount works great. The P-Series Mounts will work well too.

P-223 is better suited for an AR-15. If you haven't purchased it yet, look at the Nikon P-Rimfire 2-7x32 Matte BDC 150. This would be a fantastic scope for the M&P 15-22. (I have the older version that was called the P-22 and it is fantastic.)

P-Rimfire P-Rimfire 2-7x32 Matte BDC 150 from Nikon

Burris PEPR AR-P.E.P.R. Scope Mount | Burris Optics

Nikon P-Tactical Once Piece P-TACTICAL 1-Piece Mount from Nikon

Nikon P-Tactical two piece P-TACTICAL Mount (1-inch) from Nikon

For either the P-223 or the P-rimfire have 1" tubes so you would need a 1" mount.