The inner workings do seem pretty much the same. However, from a little Googleing I don’t think the magazines are. But I could be wrong. I personally don’t own any TM to test with as I personally don’t like TM. Strange to some I know!
it's heavy, but if a nuclear bomb goes off, I'm climbing inside it as it's rock solid. It comes with a bunch of organisers as well and they are pretty handy. It's also worth mentioning that everything seems very well made.