Alright, so this is what I came up with. I decided to attach the MMT to the external coupler(male). I could've put the male on the inside and attached the MMT to the rocket body but I didn’t really want the threads sticking out of the bottom for display. I didn’t figure it was a huge deal given it probably won’t ever see anything bigger than a B. It’s pretty solid too. Just wanted to ask your guys opinion on it and see if you guys could think of any problems with this I couldn’t.