Season 3 ofCall of Duty: WarzoneandBlack Ops 6has brought a lot of exciting new content after a slow start to 2025, most notably the return of Verdansk and some ofWarzone’sclassic weapons to go with it. There are two new assault rifles and a sniper rifle thatWarzoneveterans will be familiar with that are already usable in the game, with some more weapons coming later in Season 3.
There is technically another new weapon for players to get their hands on inWarzone, although it already existed inBlack Ops 6.Thanks to a very clever attachment choice,the Swat 5.56 Marksman rifle can now be turned into the legendary Grau 5.56. It was popular inModern WarfareandWarzonein 2020, and it’s just as good as it used to be.

How To Unlock The Grau Conversion Kit Attachment
Turn The Swat 5.56 Into A Fully Automatic Assault Rifle
The Swat 5.56 is the first marksman rifle unlocked inCall of Duty: Black Ops 6, so you will have access to the base weapon instantly inWarzone. TheGrau conversion kit is unlocked on page five of the Season 3 battle pass. As the Season 3 battle pass is ongoing, you won’t be able to unlock the Grau 5.56 conversion kit through the armory challenge section until Season 4 begins.
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The conversion kit is the first unlock on page five of the battle pass, andyou only need 16 tokens to unlock it if you have the auto-complete setting turned off. You can only toggle the battle pass auto-complete feature if you’ve bought it, so if you’re not spending money on the game, you will have to unlock it by completing the other six pages.

Best Swat 5.56 Grau Conversion Kit Loadout
The Best Attachments For The Converted Swat 5.56 In Warzone
The Grau conversion kit has turned the Swat 5.56 into the most powerful weapon inBlack Ops 6multiplayer, as it changes the damage profile of the gun entirely. It has also rejuvenated the weapon inWarzone, andsuccessfully recreates how the original Grau 5.56 felt back inWarzonein 2020. The best attachments for the newly converted Swat 5.56 lean into that, making the Swat 5.56 an excellent long-range option.
Swat 5.56 Grau Conversion
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With these attachments, the Swat 5.56 has low horizontal recoil, with very easy-to-manage vertical recoil.The conversion kit gives the Swat 5.56 clear and easy-to-use iron sights, but you can use an optic if you prefer instead of the foregrip. The conversion kit doesn’t allow you to use a barrel attachment and only lets you use the 50-round magazine, which is suitable for long-range gunfights. If you pair the Grau with an SMG and the popular perkslike you would with the Kilo 141 loadout, you’ve got one of the best long-range loadouts inCall of Duty: Warzone.

Call of Duty: Warzone
Call of Duty’s first significant foray into the battle royale genre arrives as Call of Duty: Warzone, an action, first-person shooter from the Infinity Ward and Raven Software development teams. Warzone arrived as part of the 2019 installment of Call of Duty: Modern Warfare, allowing for 200+ player games. The game allows players to go it alone or go in teams as they battle against various elements and other players working against them in an attempt to be the last warrior standing.
