I'm wondering if these rifles handle the 22lr round as well as rifles that were designed for the 22. For example, can a good 22 AR shoot as accurately and reliably as the common Ruger 10/22?
Shooting Industry Academy of Excellence Rifle of the Year
The new M&P15-22 is a dedicated M&P15-format rifle designed and built as a true .22 LR semi-auto from the ground up, with all the standard operating features and accessory specifications of a modern-version centerfire M&P15 rifle.
It's a rifle built for the .22. It shoots as accurately and reliably as a 10/22.
I'd pick a M&P 15-22 over those other rifles anyday.