Mag Prime Main Blue Print Drops

[Lucem-Infernalem]

So I've heard whispers that the blueprint no longer drops from tower 1 survivals. I've also heard say that the bp now drops more often in tower 2 survivals, the wiki seems to be incorrect and I was wondering if anyone could help me clear up where it is so that I can farm the correct areas. Thanks in advance.

[88th_Phantom]

Managed to get mine from tower 1

Then again I managed to get every other part from a T2 mission.

Might be luck, but it seems accurate enough.

Edited October 27, 2013 by Phantom_Jack

[Eleriath]

Im wondering the same...ive been trying to get the bp since its the only part missing for me but after running 15 survivals, some to 5 others to 10 i cant seem to find the bp. Mind posting at what time did u get the mag prime bp?