ADP-mk4 Core

APD-mk4 Core is the heavy torso armor manufactured by Clark Defense Systems. It is part of the ORC-mk4 armor set

In-game description
"When there's a difficult job at hand, you want to ensure that you can see it through to the end. Clark Defense Systems' ADP-mk4 heavy armor allows Marines to remain in active combat situations for a longer duration with more loadout options, while it's powered frame provides near unfettered movement despite the protection it offers."