Pretty classic skill tree, only particular detail is Green tree T2 points can be switched for personnal prefs, and Playing dirty only need 4 points com included as 50% is more than enough. The build aim to deal the most kinetic dmg possible and can handle few modifiers from mayhem mode against it.
Weapons i use:
Maggie 526x6, Unforgiven 966 384% crit, Bekah 911 Anoint: When barrier +30% crit dmg, Monocle 1687
COM: Executor COM (+1 Violent violence [mandatory], +2 Playing dirty ,+2 Good misfortune)
Grenade: Any generator grenade or debuffing grenade (F.e : It's piss)
Artifact: Anything with either CDR or Jakobs bonuses should do the trick