How to get Panthera Prime Barrel in Warframe?

Panthera 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 Panthera Prime Barrel

• Lith P3 (Rare) - Vaulted
• Lith P4 (Rare) - Vaulted
• Meso P12 (Rare) - Vaulted
• Meso P4 (Rare) - Vaulted
• Meso P7 (Rare) - Vaulted