WE have only 2 TRU's and they got their MM6 figs about 2 weeks apart for some reason. The one that got them second restocked whereas the first has not. Go to your TRU and ask them for the fig, then ask them to check the other stores. Depends who you ask, but sometimes you luck into a helpful and friendly person. It's worked a few times for me, notably with the Tie Interceptor.
I'm sure you know this, but just as a reminder. I'll be hunting until you say you have one.