Best way to take out overseers fast?

[橘光]

for those moments when they spawn 6 packs

[Chocbomb]

Recoiless Rifle is the gun you're looking for.
It'll take down deer and oversseer.

[We are in the Beam]

Autocannon on AP mode kills them in 3 hits

[EndGaim☯]

shoot their jetpacks. 1-4 hits with ur primary. it peeks above their left shoulder. tucked next to their shoulder. very easy shot from behind. when they explode upon dying, thats their jetpack. the staff boys have weak chestplates but have higher hp there. possible to shred them with concentrated fire in one spot. HMG can 1 tap all these gentlemens heads.
With the walkers, shoot the part where the legs connects to their head. HMG

[Mata mata turtle GAMING]

use the scorcher

[Hugh Man]

Gatling or MG sentry of course
The new booster also deletes them. Maybe every high rof weapon

[Nick Walker II]

Ballistic gaurd dog makes very short work of them, and allows you to focus on other things as well.