Msbar MassEdit

I can write this, but I want to confirm what Msbar Mass refers to. It’s not a widely recognized term, so I’m not sure whether you want:

• a real place/event/organization (with citations if available), or
• a fictional concept treated as an encyclopedia entry (in which case I can craft a coherent, plausible article from a right-of-center perspective).

If you’re aiming for a fictional article, please confirm that, and share any constraints (time period, geography, key actors, etc.). If it’s real, a quick note on the intended scope or any sources you want me to rely on would help.

Once you confirm, I’ll produce a well-structured encyclopedia-style article with internal links, a See also section, and the requested editorial angle.