With a few tweaks, it’ll go far.
Why use the C9 in Black Ops 6?
The C9 is essentially the MP5 from previous Call of Duty games in all but name.

Barrel: Long Barrel
We’ve gone with theLong Barrelfor a nice boost to damage range.
The Redwell Reflex is an especially good option that’s also available very early on.
Alternately, you might add the Quickdraw Grip as your Rear Grip to improve your aim-down-sight speed.
Stock: Combat Stock
TheCombat Stockis my preferred option for upping aim walking speed and flinch resistance.
Both are handy additions especially when you’re firing from longer distances.
With these plus every other add-on here, the C9 should be much more effective beyond close range.
Best AK-74 class setup: Secondary weapons
GS45.
Best AK-74 class setup: Equipment and Perks
Equipment:Frag, Stim Shot, Assault Pack.
Perks:Assassin, Dexterity, Double Time, Enforcer.
Best AK-74 alternatives in Black Ops 6
Jackal PDW, Tanto .22.
Nevertheless, it’s worth experimenting with all three of these SMGs to see which works best for you.
With that, you’ve got the lowdown on the best class setup for the C9.
If you like the power of Submachine Guns, check out our guide to thebest SMGsin Black Ops 6.
For Assault Rifles, head to our guide on thebest ARs.