How to get Lex Prime Barrel in Warframe?

Lex 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 Lex Prime Barrel

• Meso K8 (Common)
• Meso N11 (Common)
• Axi A2 (Common) - Exclusive to the Void Trader (Baro Ki'Teer)
• Axi V14 (Common)
• Lith A2 (Common) - Vaulted
• Lith B6 (Common) - Vaulted
• Lith B9 (Common) - Vaulted
• Lith H2 (Common) - Vaulted
• Lith L3 (Common) - Vaulted
• Lith N12 (Common) - Vaulted
• Lith N13 (Common) - Vaulted
• Lith N17 (Common) - Vaulted
• Lith N7 (Common) - Vaulted
• Lith P8 (Common) - Vaulted
• Lith S14 (Common) - Vaulted
• Lith T2 (Common) - Vaulted
• Lith V2 (Common) - Vaulted
• Lith Y1 (Common) - Vaulted
• Meso C10 (Common) - Vaulted
• Meso C6 (Common) - Vaulted
• Meso L2 (Common) - Vaulted
• Meso P13 (Common) - Vaulted
• Meso P14 (Common) - Vaulted
• Meso S11 (Common) - Vaulted
• Meso S13 (Common) - Vaulted
• Meso S5 (Common) - Vaulted
• Meso S9 (Common) - Vaulted
• Meso T2 (Common) - Vaulted
• Meso T3 (Common) - Vaulted
• Meso V4 (Common) - Vaulted
• Meso Z5 (Common) - Vaulted
• Neo A13 (Common) - Vaulted
• Neo A3 (Common) - Vaulted
• Neo D6 (Common) - Vaulted
• Neo N3 (Common) - Vaulted
• Neo O3 (Common) - Vaulted
• Neo Q1 (Common) - Vaulted
• Neo S1 (Common) - Vaulted
• Neo Z5 (Common) - Vaulted
• Axi B6 (Common) - Vaulted
• Axi G13 (Common) - Vaulted
• Axi K1 (Common) - Vaulted
• Axi M1 (Common) - Vaulted
• Axi N5 (Common) - Vaulted
• Axi V7 (Common) - Vaulted