Happy Sleeper day, and a question (Destiny)

by cheapLEY , Sunday, February 07, 2016, 14:16 (2999 days ago) @ Vortech

I've been trying to get more serious about the weapon quests and I'm making good progress on touch of malice and the sword, but despite killing tons of trash while I farm materials, I get no ancient fusion rifles.

Is it possible I already got the 4 I need and the next step will just show up on the director today, or is there an actual quest that should appear on the quest menu screen first?

Are those just drops with a random chance of dropping in any circumstance?

I got all of mine within a few days, and it was always while doing the quests to kill Taken lieutenants or Champions, so I guess I just assumed it was associated with those events.