Galco has a few: http://www.usgalco.com/HolsterPG2.asp.
What holster do you recommend for a M&P9. I don't have a cc permit yet so mainly looking for something for open carry while on my private property (hunting etc.) and for going to do steel plate shoots at the local club.
Don Hume H721OT
I have one for my M&P 9, and it works great. There's also a model with a thumb break, if you want one. I don't think it's needed, though. The retention is pretty good.
Another option is a Desantis Speed Scabbard, also good.