I took a trip out to the range today to shoot my M&P15-22. I tested a few different brands of ammo and all functioned almost flawlessly. I had installed a vertical foregrip and a single point sling and the sling works wonderfully when doing rifle to sidearm drills. I did have a couple failures to fire on the Federal Champion 525 round value box but it ran well using Winchester Super X and CCI Mini Mags. I also shot my brand new Browning Buckmark and had maybe 5 failures with that gun. I love running rifle to sidearm transition drills and now I can do it at an affordable cost!
I've had a few other .22 firearms in the past but none of them were as much fun as the Smith & Wesson M&P15-22! I'll never get rid of it.