Can someone explain to me what it/they is/are? I see their tank logo and “sup-def” logo everywhere But no clue what it is.

Then I see this.

https://www.gunbroker.com/item/882183287

What am I missing besides a gen 3 noveske upper and lower with different logos. I get the collectibility and all that but not sure what the brand is. Is it like the “supreme” of the gun world?