by kestononline last updated Jun 28, 2018 Patch v1.8
Build I have been playing and loving lately. Setup in cover, and flashbang, then focus down enemies. I lean toward the M60 (the Alejandro kicks too much; but it's there for when closer and need burst DPS).
Base Haste is 25%, plus 15% from the Support Station; brining your to 40%... good enough for 13-14s flashbang cooldown. Build has 58% DTE as it's mostly toward Legendaries that are Elite-only NPCs.
Though I run LMGs for the extra 22% Out of Cover (basically whenever you flash something), and competent (right after you flash something); some might prefer to use an Auto Rifle (either will work). Usually you are setup at a distance; so whichever is best for you.