How do I get the fully-automatic fire for the Fazertron?

Question

I am just curious as to which garrison in Far Cry 3: Blood Dragon is the quest to get the full-auto upgrade on the Fazertron assault rifle found? Thanks!

Answer 1

The Fazertron's full-auto upgrade is unlocked after the "Ruining Everything" hostage rescue mission in garrison # 8, and costs $2000.

^{Sources:
"Fazertron", IGN Far Cry 3: Blood Dragon wiki
"Ruining Everything" Far Cry 3: Blood Dragon Game Guide | gamepressure.com}