How to get Vasto Prime Barrel in Warframe?

Vasto 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 Vasto Prime Barrel

• Axi A5 (Common) - Exclusive to the Void Trader (Baro Ki'Teer)
• Lith A5 (Common) - Vaulted
• Lith K11 (Common) - Vaulted
• Lith M8 (Common) - Vaulted
• Lith T11 (Common) - Vaulted
• Neo D1 (Common) - Vaulted
• Neo N2 (Common) - Vaulted
• Axi M4 (Common) - Vaulted
• Axi P5 (Common) - Vaulted
• Axi S7 (Common) - Vaulted
• Axi V3 (Common) - Vaulted