No modules, this is pre-elite hunter build I am using and works well. This is not the most DPS but packs a punch and health sustain is great.
Multizapper gadget can be swapped out for whatever you like, I use multizapper for enemy stun and single target DPS boost.
Unstable Lazer passive is key as each hit from the bow's arrows can trigger a lazer, leading to multiple lazer triggers at once!