It's definitely aluminum. A magnet won't stick to it. I found a guy in Australia on IG that definitely has the same bumper as me. He thought it was a TJM as well but wasn't positive.
This came on my truck, PO told me it was an old school aluminum TJM. It looks very similar but not exactly like the TJMs I have seen online. Any ideas?
TJMs I've found on mud:
Poster said this one was made for a troopy: