How to get Fulmin Prime Barrel in Warframe?

Fulmin 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 Fulmin Prime Barrel

• Lith G10 (Common) - Vaulted
• Meso P13 (Common) - Vaulted
• Meso V9 (Common) - Vaulted
• Neo G7 (Common) - Vaulted
• Neo G8 (Common) - Vaulted
• Neo K7 (Common) - Vaulted
• Axi W4 (Common) - Vaulted
• Axi Z2 (Common) - Vaulted