Warzone best Swiss K31 loadout: Our Swiss K31 class setup recommendation and how to unlock the Our Swiss K31 explained

How to get the most out of the Swiss K31 in Call of Duty: Warzone.

The Swiss K31 in Warzone joins the PPSh-41 in kicking off Season 3 with several new weapons.

If you were looking for a new sniper rifle, the Swiss K31 is an intriguing and old school choice. This is a bolt-action sniper rifle, so people already familiar with marksman rifles and similar snipers will feel right at home.

The rate of fire is quicker than other heavy hitters like the ZRG 20mm, for example, which is compensated by a less impressive damage when aiming below the head.

Warzone's latest season has taken players all the way back to 1984 - and this is a sniper rifle you will be seeing often. This page covers how to unlock the Swiss K31 and the best Swiss K31 loadout to prepare yourself for the battlefield.

Note: With the arrival of Warzone Season 4 in June 2021 and the balance changes it brings, this page will receive an update in the coming days. Until then, the vast majority of advice here will still apply - but know one or two things may differ once we've fully assessed the new meta.

On this page:

Verdansk '84 Trailer | Call of Duty® Warzone™

For more explainers, read our selection of best Warzone weapon recommendations, as well as deep dives into popular picks such as the CARV.2, FARA 83, Stoner 63, AK-47, Bullfrog and PPSh 41.

How to unlock the Swiss K31 in Warzone

Arriving to the roster on April 22nd, 2021, the Swiss K31 first debuted in Warzone at the start of Season 3 - and you requires to reach a specific battle pass level to unlock.

To unlock the Swiss K31 in Warzone, you must reach level 31 of the Battle Pass.

As a second option, you can purchase the Battle Pass that includes the booster pack to take you to level 20 to get part the way there, or spending COD Points to buy tiers.


Reaching level 31 will take some time, but at least you're able to choose how to do it. Warzone, Zombies, and regular Black Ops: Cold War multiplayer modes will give you experience for your Battle Pass. That being said, this makes for a great opportunity to kickstart the Hunt for Adler event, which requires you to play and complete 7 games on Yamantau in Cold War's 24/7 mode.

Once you've reached level 31, the game will let you know of your new weapon in the rewards page after the match. From there, just head to the loadout tab and equip the weapon in the primary slot.

Best Warzone Swiss K31 loadout and attachments

The Swiss K31 is a refreshing addition to the weapons' roster, but it's important to keep in mind both its advantages and limitations. It carries low recoil and great accuracy, but some aspects like aim down sight speed and idle sway control are a top priority in terms of loadout planning.

Below are our recommendations for an optimal Swiss K31 loadout, as well as the corresponding levels for each:

  • Muzzle: Sound Moderator (Unlocks at level 20)
  • Barrel: 24.9″ Combat Recon (Unlocks at level 30)
  • Optic: Axial Arms 3x (Unlocks at level 12)
  • Laser: SWAT 5mw Laser Sight (Unlocks at level 31)
  • Handle: Serpent Grip (Unlocks at level 44)

You no longer have to worry about reaching level 46 for the GRU Suppressor, as the revamped Sound Moderator is now our top choice. This attachment has an array of interesting effects in the Swiss K31, increasing bullet velocity, both aim down sight and sprint to fire speed, as well as adding sound suppression, of course. Aiming stability is hit just slightly with this attachment, so you shouldn't worry too much about it.

The 24.9” Combat Recon barrel is a vital inclusion in this build. Your idle sway control will be decreased, but the addition of bullet velocity is a must to strengthen the muzzle even further.


It wouldn't be a sniper rifle without a long list of optics to choose from. Whilst there is a degree of personal preference involved in this particular category, we found the Axial Arms 3x to be the best choice for this weapon. You can get it early, it carries up to 3.0x magnification, and isn't at all intrusive in terms of field of view when aiming down the sight.

Yes, we know that adding a laser to a sniper rifle sounds a tad ridiculous, but it's actually beneficial here. Opting for the SWAT 5mw Laser Sight will improve the aim down sight time exponentially, with only a slight decrease to aim walking movement speed.

Lastly, the Serpent Grip is perfect to increase the aim down sight time even more. You will lose a bit of sprint to fire time, but it's nothing compared to the balance it provides to the loadout as a whole. As a result, the Swiss K31 will now be faster than ever before.

Warzone Season 4 is here! Check out the new Season 4 Battle Pass skins as well as how to find Red Doors, Uplink Stations and crashed Satellites and use Special Weapons for the Nail Gun. As well as new additions C58 and MG 82, learn our recommendations for the best weapons across the game, including popular choices such as the AMAX, AMP 63, CARV.2, FARA 83, Stoner 63, AK-47 and Bullfrog, as well as new additions PPSh-41 and Swiss K31.

Best Warzone Swiss K31 class setup, perks and equipment

Here's our choices for the best items - such as equipment and Perks - to make the best Swiss K31 class setup in Warzone:

  • Perk 1: Cold-Blooded (Unlocks at level 29)
  • Perk 2: Overkill (Unlocks at level 38)
  • Perk 3: Tracker (Unlocks at level 51)
  • Secondary: FARA 83 (Unlocks by completing a challenge where you'll need to get two headshot kills in 15 different matches using assault rifles)
  • Tactical: Heartbeat Sensor (Unlocks at level 1)
  • Lethal: Claymore (Unlocks at level 1)

As you will be mainly using the sniper rifle in Warzone, either to cover a teammate or just as you defend your spot before the circle closes yet again, Cold-Blooded is a must. This will allow you to go undetected by the AI targeting system, as well as thermal optics from enemies.


As per usual we recommend opting for Overkill as the second perk. On this occasion we went for the FARA 83. It's a versatile assault rifle that should cover everything from short to long range, and pairs greatly with the speedy build for this sniper.

For the third perk, we went for Tracker over the others thanks to the ability to see imprints of enemy footsteps.

Lastly, the Heartbeat Sensor is a great companion for the third perk, allowing you to keep an eye on enemies that you haven't crossed paths with yet. But in case anyone manages to sneak past your vicinity, having a Claymore placed near you should provide for a helping hand.

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About the author

Diego Arguello

Diego Arguello


Diego is a freelance writer from Argentina who has learned English thanks to video games. He missed most of the classics, but can gush about Doom, Persona, The Darkness and pinballs for hours. Probably on Twitter right now.


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