This is a DPS build for PvE. I don't recommend using it outside of a group with a healer that can overheal you, because you are lacking sustain.
If you feel like you are too squishy, switch the Skill Haste on the Holster for Health. If you want even more Toughness, get Health instead of Skill Haste on the Gear Mods aswell.
It can be used with literally any weapon in the game, I suggest running with an assault rifle due to the Enemy Armor Damage and an bolt-action sniper for one hit headshots though.
If you feel like you need it you can run with Stability or Accuracy instead of Critical Hit Damage on the weapon mods.
If you want to have a similiar build for PvP, I suggest checking out my Hexotic PvP DPS build.