The following is based on Fallout Tactics and some details might contradict canon.
Polished metal plates, finely crafted into a suit of armor. A superior version of the regular metal armor.
Characteristics[]
A minor upgrade of the standard metal armor, though well worth upgrading around St. Louis, due to the superior weapons used by the supermutants.
Locations[]
Sold by the quartermaster:
Complete Mardin (+1)
Complete St. Louis (+10)
Purged from inventory after Coldwater.
In the town of Quincy, in the uppermost left building, a church, has a free suit of Mk II metal armor in a chest but be careful, there are some deathclaws guarding it.