by DaleBarr89 last updated Apr 24, 2018 Patch v1.8
You'll probably never really have to use both M4s unless you get set up on by rushers. They are mainly used to build stacks.
BFB is a must have in my opinion, with this build I'm able to deal roughly 2.6million damage in one hit. Enough to take out a clustered group of NPCs in one go.
Turret I use to build Tactician stacks, so you see why you'll never really have to use your weapons. Plus it's good at mowing down NPCs and you can switch to a flame if you want to keep rushers and alike at bay.
If you want to make more use of the shrapnel talent switch turret for seekers.