Warzone 2 guru finds ridiculous AR build: “Worst loadout in the entire game”
Warzone 2 expert Metaphor has created an off-meta Kastov 762 loadout that features a Masterkey underbarrel shotgun, and although it’s “the worst thing in the entire game”, the build works up close.
Using themeta guns in Warzone 2definitely gives you an edge over opponents armed with less ideal tools, but it never guarantees victory. Certain skilled individuals can utilize even the worst tools at their disposal for impressive feats, such aslaunching a nuke using only melee weapons.

Metaphoropted to challenge himself with one such off-meta build that utilizes the “worst thing in the entire game” in his opinion, which is the Masterkey underbarrel shotgun attachment.
Surprisingly, his Kastov 762 equipped with the Masterkey was able to take out a number of opponents up close.

Masterkey Kastov 762 loadout in Warzone 2
Attachments
Metaphor built this off-meta Kastov 762 with the Masterkey underbarrel shotgun in such a way that this single rifle can cover long, medium, and short distances in firefights.
It’s definitely a “joke” build that Metaphor himself admitted had a lot of “fun” with, but it’s definitely not recommended for serious matches.

Despite all of this the content creator found some pros of running the Masterkey shotgun inhis video. “It has an extremely reliable two-tap up close. I mean, yeah, what else is it gonna do, one-shot? That’s never going to be a thing so. The problem is that it makes your AR worse.”
On top of this Metaphor struggled to understand what kind of ammo his Masterkey required for most of the match where he used it.

Best Warzone SMG loadouts in Season 5
Warzone’s new meta Assault Rifle is perfect Krig C replacement after nerf
Forgotten CoD AR is meta again in Warzone after Season 4 Reloaded buff
To his horror, it turns out that the Masterkey shotgun uses the launcher ammo usually used for Rocket Launchers and the underbarrel grenade launchers. This is definitely another big con of the attachment, as launcher ammo is scarce and you cannot stack a lot of it in your inventory and backpack slots.
Of course, the main strength of this setup is that within a fraction of a second, you transform your medium-range Assault Rifle into a shotgun, which definitely has its uses.