Arbites
10-25% Rending vs Staggered Enemies.
19-25% Impact for 1.5s on Hit. Stacks 5 times.
5-6.5% Strength for 3.5s on Close Range Kill.
7-10% Reload Speed for 2.5 seconds after Close Kill. Stacks 5 times.
Playing the puppy class, the Arbitrator, and giving up the puppy via Lone Wolf is tough - you trade having your back covered for about 30 Voltaic Shock Mine , and in this case, that rules. The Agripinaa Mk VIII Braced Autogun comes with double_cleave for 3.0 base and by prioritizing impact nodes like The Emperor's Fist you can speed run being at 10 Forceful stacks to get that 50% extra cleave to get to 4.5 cleave. 32.5% strength from Deathspitter blessing 5 stacks gets you up to just under 6 cleave which is 4 Poxwalker per shot or 2 Scab Gunner and all the knocking around folks from the impact will boost your cleave further from hit mass reductions.
Don't try to bust Carapace enemies with the braced auto - Agni Mk Ia Shock Maul takes care of bonking good and using the shocking special will also get multiple Forceful procs off enemies like Crusher and Bulwark that have a chunk of impact resistance. It's possible to swap Soulguilt Scan and Prosecution Blow for Street Smarts and March if you want to run around faster while Braced Auto-ing. Just throw a shock mine every time a scary pack appears and your team will enjoy a smooth Auric run!