I wouldn't buy an MP22 again. The MP15-22 I would buy 10 of, but the MP22 I have owned since September, and I have YET to find ONE 10rd magazine in stock or online anywhere. I have one 10 rd mag, that came with the gun, and nobody ever has them, and I have contacted Smith and Wesson, and they don't give ETAs even. What kind of BS that you get ONE mag with a gun, not even 2, and can't buy any more mags? Plus, I have ran 4 kinds of ammo through it, and it fails to feed properly at least 1-2 rounds per 10rd mag, which is garbage.
I have put bricks through my MP15-22, and not one hiccup ever. It's crazy my best 22 rifle is the 15-22, and my worst pistol ever is it's stablemate the MP22. even my old 22 revolver still works perfect that I have had since I was a kid.