How to get Ballistica Prime Blueprint in Warframe?

Ballistica Prime Blueprint 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 Ballistica Prime Blueprint

Other items:
Ballistica Prime Lower Limb - Ballistica Blueprint - Ballistica Prime String
Ballistica Prime Upper Limb - Ballistica Prime Receiver