How to get Steflos Prime Receiver in Warframe?

Steflos Prime Receiver is an item dropped from Void relics.
You can find the list of relics below, and click on the links to see how to get them.

Relics dropping Steflos Prime Receiver

Other items:
Steflos Prime Stock - Steflos Prime Barrel - Steflos Prime Blueprint
Steflos Blueprint - Steflos Stock - Steflos Barrel