[TRMN8R]

Yep, they're most def two different magazines.

FWIW, there's always someone selling PSP mags (as well as M8 flavored) on PCT. In fact, there's some available there right now:

http://www.parkcitiestactical.com/ubb/ultimatebb.php?ubb=get_topic;f=10;t=012618

Feel free to tell 'em I sent you their way :00000: ...