question on rebuild stamps

[RCS]

I have a WW2 Winchester stock that still has a faint WRA WB cartouche. This stock also
has a AAP stamp which is Augusta Arsenal and the inspector initial. I am not certain
about the AOR stamp ? could be Anniston ? anyone know about the AOR stamp46309

[Sunray]

Speculation has it that it might be Anniston with a letter suffix. There's only one other mention of 'AOR' that I can find. And that's on an old CMP forum page. There's some speculation that it might be a Greek mark too. Might, very heavily on the 'might', be Arlington Ordnance/Blue Sky.
It clearly wasn't done at the same time as the AAP though.

[Tom Doniphon]

We've been trying to confirm that mark for years. Most believe it is Anniston Ordnance Depot, the name used by that depot before they changed it in the early 1960s.

[Richard H Brown Jr]

There was also an Augusta Ordnance Depot in Augusta,Ga that did depot rebuilds.