I am hoping to get the HK parts as anything new to do, as I never did the quest before. I are in possession of the first 5 components and just need the two flashpoint ones. On the webpage I am using as a guild it claims that the 6th portion is in the standard flashpoint the false emperor. Therefore problem is from 4.0 onwards is typical mode, alone or tactical. Since it just allows 3 possibilities Alone, Tactical or Hard. Usual is no option. I am aware their easy but uncertain from the different two. Hkparts
According to the thread, you will get the portion from HK-47 in Solo method Fake Emperor