An icon will appear like there is something you need to pick up. You can also see where to go, if you are near it, by zooming down a scoped weapon. The weapon parts are in 3 specific locations. Go to Plaguelands patrol and kill enemies until you get all of the manual pages. When you turn in the schematic, you will get a quest to pick up manual pages and weapon parts. Jump on it and kill the Pilot Servitor to get the schematic.
There are 2 ways you can start this quest.
#Destiny rise of iron best guns how to#
This guide will go over how to get the exotic Khvostov in Destiny Rise of Iron including: You can also check out my guide to get the Gjallarhorn. I'll help by going over the method and quests required to unlock the exotic Khvostov.