Arbites
5-8% toughness on Chained Hit.
10-25% Rending vs Staggered Enemies.
5-6.5% Strength for 3.5s on Close Range Kill.
Gain 7-10% Close Damage for 3.5 seconds after killing an enemy at close range, stacking 5 times.
Coupled with a dmg stim this is a 1 shot machine on anything south of Monstrosities and Bosses. Focus on dodging and reloading for extra dmg with well placed weakspot hits to gain crit.
Shield can be swapped for shock maul but I prefer the aoe cc and block potential when gaining stacks. Swap "ranged dmg boost" for "shield plates" if you find toughness to be an issue.