I need to get a full set of black armory armor and so far I have managed to get the legs, body, and helmet. I am missing the titan mark and the arms (actually I accidentally deleted them both). Aside from the weekly bounty which I just completed and got another set of legs is there a good way to get the full set? Also. For the forge polymer if you complete a weapon from you will get an armor piece. Do I need to do a legendary one (ballistic) or what?