I read that somewhere, too, but their website lists their address as ‘Oceanside’.
208 N Freeman St
Oceanside, California 92054
So does Google. I think it was a erroneous headline here on FR...that’s all that comes up in a search of Ares Armor National City.
I had read that Ares had some facility in Oceanside, but supposedly the friction over the sign and the municipal Nazis telling them they “didn’t approve” of them or of guns and that they should cease business or risk jail (how’s that for muni megalomania — their whims and preferences can be enforced just like actual laws!) was the city of National City. A fight with that city could certainly have led to a BATF raid of another facility owned by the company.