Fire Extinguisher Bracket

[Darth_Kitten]

Does anyone have a bracket like this? What am I missing? I see two rivets on the bottom that held something, but have no idea if it was a cup or what?
Any chance someone has an extra lying around?
Thanks,
Mark

After some googling, perhaps this is not a FE bracket, but one for a decontaminator? It was mounted to the firewall right next to the louver bracket/handle.

[woodwalker]

Yes cup on bottom
Google pyreen fire gun #1 that is the halftrack extinguisher and that's where it mounted
Not sure when they stopped using them but mine is a late war m2 that had it mounted where you say