I could be wrong, but I don't believe that Proline makes or made the Badlands tire in M3 or M2, only in xtr compound. The xtr compound is there hardest compound they make. I've looked on there site and they don't offer it in anything but the xtr. I know that when racing 1/8 scale buggies I always wanted to get the badlands in M2/M3 because xtr compound worked very well at the track I raced at, but a little softer/stickier would always be better. I'm not saying that they didn't make them, just have never been able to find a set in M2/M3 in the last few years.
I have said wrong. It was M2 compound. Sorry guys.
They might have a few more sets at my LHS. I'll try to go by there and check.