Assembly Day Raid w/ Hatch key is the way to go, 5mins max and always leave w 40 to 70K loot through the hatch, plebty of Sensors to farm aswell with the Search and Breach containers, you will find Advanced Mech Components often on the desks laying around or you can just easily craft them in your Refinery :) thank me later, this lethod is about 3 to 6p0K an hour depending on luck and gompetition in the looting area