Blueprint is acquired at the market, and at Archwing Interception on Uranus, rotation C.
Barrel drops from Archwing Mobile Defense on Earth and Mars.
Receiver drops from Archwing Exterminate on Venus.
Stock drops from Archwing Defense on Neptune, rotation C
Trivia
Phaedra is a character in Greek Mythology, best known for her role in Euripides' play, the Hippolytus. Phaedra's name derives from the Greek word φαιδρός (phaidros), which meant "bright".
Media
Warframe - The Jordas Precept - Highlights Update 17.5