The .22M&P is made under license by Walther [IIRC] and while it's the same size and shape as a S&W M&P they are quite different internally. Consequently the trigger and action is different, there are no removable backstraps and etc. Walther _might_ make a 2.0 version of their pistol, but it would still only be an approximation of the real thing. I think it's unlikely [but I could be wrong...].