sorry about that title
my M&P22 work fine I have about 2000 round thru it...works fine..
it works with the CCI mini mags and the bulk Federal 550 box
I also tried the Winchester M-22 brand they work fine.
and finally I used Winchester wildcat ammo that is the crapy ammo that you ger 50rnd in a cardboard box for 2.99
yeah it is able to cycle that...you are good to go.