Hello All and Happy New Year. You guys with MP Sport II rifles, what are you guys running for .22 uppers? I hear stories about .22 uppers not working reliably in some AR lowers. My rifle's stock and will stay that way, so just looking for a drop on upper that shoots decent for .22lr. I expect a few duds, as 22 ammo always has them, but the CMMG's function pretty well in the online vids. Thanks for any help guys.
PS: I'm not near my rifle right now, do the new mfgd MP Sport 2 OR w/CT Red Dot models, come with rounded, or notched hammers?