LazyData's Kill Skill Vex Build. LVL 70 All in 1 Gun Build

Weapons:

Prioitise weapons with high pellets per second output in order to maximise Mortal Terror consistency and kill skill stacks.

Crow-Sourced - Best all round. Aboslute beast of a weapon. Use with Active Fire 3 for best results.

Convergence - Easy access start bossing weapon. Not as good as the above but high tier base game option to get the farm machine rolling.

Lockjaw - Peak mobbing for high density areas, such as the Takedown or CoS. Drops off in lower density content.

Cormano - Best Vault Card weapon for easy access. Great to get going with.

Triplicate - All rounder easy mode for mobbing, bossing, viles, and everything in between. The everything gun.

Darkbeast - New S tier weapon for both mobbing, viles, and Bossing. Jakobs for Mobbing. Ripper for Bossing Daedalus Shotgun will provide the most damage if you can kill the boss before running out of bullets.

Wombo Combo- Destroys Vile enemies.

Ohm I Got- Teen Witch lets us maintain it at full strength. One of the fastest mobbing weapons.

Hellwalker - Just abit of a beast.

Complex Root - Roll with Atlas Tracking and Jakobs Ricochet for one of the best bossing weapons in the game.

Weapon choice for this build is very versitile, if it's good, it's good here. Refer to my tier list for the general placement of weapons within the game's meta: https://mobalytics.gg/borderlands-4/tier-lists/meta-weapons-borderlands-4-tier-list

Seriously, the usable weapons list for this build goes far. All the way down to about Vamoose, that is where I'd say you'll start pushing it.

Rep Kit:

You rep kit will want to be spammable for fire rate uptime and movement speed. Accelerator passive is comfy.

War Paint - Thanks to Guns and Needles we can maintain 100% uptime on this Repkit, making it best in slot for general play.

Triple Bypass paired with Now With Caffeine can be used to immediately recover your actionskill, allowing for alternative passives such as: Engrage, splash damage, go go gadget etc.

Classmod:

Teen Witch- Legendary option, use with an amp shield to maintain Amp shots.

Prioritise as many points Grave Thirst as you can.

Shield:

Any AMP shield. Up to 150%. Even Purple shield is good.

Watts 4 Dinner - Rolls AMP, and gives an extra 25% bonus element for damage and Mortal Terror procs.

Cindershelly - Easiest shield to get 150% amp on.

Firewerks - No AMP so less damage, but funny missiles.

Ordnance:

Jakobs throwing knife- More crits, faster kill skill stacking.

Draupner - Best bossing DPS option in the game. Use with Witchy Trigger Finger.

Slippy with the CQC Specialisation for peak DPS.

Torgue Heavy Weapon. Heavy Ordnances paired with High Caliber Tier 3 and sustained Witchy Trigger Finger can be some of Vex's Highest Boss DPS vs non flying enemies. Jump up and shoot through the enemy to hit the floor behind them.

Enhancement:

In general pair with your primary weapons. 'Gun Damage' is the best passive stat.

Jakobs Enhancement With stacking damage on crit, or extra ricochet.

Vladof Enhancement of course. Either Gain 30% chance to fire an extra projectie or Gain 20% fire rate and 20% mag size. Or both if you get a lucky legendary!

Ripper Enhancement with Gaining gun damage everyshot.

Firmwares:

High Caliber 2

Deadeye 2

Bullets to Spare 1 / Heating Up 1 / Deadeye or High Cal Tier 3.

If using Atlas parted weapons use Atlas Infinum.

Active Fire where applicable.

Other great options include:

The Best Defense

Groundbreaker

CQC