How to get Rubico Prime Barrel in Warframe?

Rubico Prime Barrel 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 Rubico Prime Barrel

• Lith S8 (Uncommon) - Vaulted
• Lith T6 (Common) - Vaulted
• Meso Z2 (Uncommon) - Vaulted
• Meso Z3 (Uncommon) - Vaulted
• Neo H2 (Uncommon) - Vaulted
• Axi M1 (Uncommon) - Vaulted