Sleeper Simulant Heavy Fusion Rifle Destiny The Taken King Inventory can be earned in the expansion.
Here we have next is a Heavy Fusion Rifle exotic, The Sleeper Simulant is a deadly fusion rifle with lots of power and it reads:
Subroutine IKELOS: Status=complete. MIDNIGHT EXIGENT: Status=still in pogress (oh)
Once again Xur is at it and has a small message about the Sleeper Simulant Heavy Fusion Rifle Exotic:
I can not endure this place any longer… Before I depart, a final offer for you.
Sleeper Simulant: a Fusion Rifle equipped in your Heavy Weapon slot. This weapon’s laser tears through enemies and ricochets on hard surfaces. – Xûr, Agent of the Nine
Also take a look at all the Destiny Taken King Exotic Weapons, Gear and more.