The best ISO 45 loadout in Warzone

By Joseph Yaden Published June 21, 2023

The ISO 45 SMG is the newest weapon added to Call of Duty: Warzone during Season 4, alongside the Tempus Razorback rifle. This SMG is, as expected, ideal for close-range encounters in Warzone, and it’s perfect for the new Vondel map. As always, building weapons with the best attachments can be an overwhelming process, but this guide is here to help. This is the best ISO 45 Warzone loadout.

The best ISO 45 loadout

The ISO 45 in Warzone. — Activision

Muzzle	Lockshot KT85
Laser	1mw Quick Fire Laser
Magazine	45 Round Mag
Stock	SK-3 Cheetah
Rear Grip	EXP Shear

Statistically, the ISO 45 comes out ahead of previous close-range meta weapons like the Lachmann Sub, VEL 46, and Vaznev-9K — at least within the first nine meters. It’s also worth noting the ISO 45 has a fast fire rate, meaning you’ll likely blow through ammo quickly if you aren’t accurate with your shots.

With this loadout, you’ll mostly want to focus on close to midrange gunfights. Start with the Lockshot KT85 Muzzle for improved vertical and horizontal recoil control. Next, we recommend the 1mw Quick Fire Laser to improve your aim down sights (ADS) speed (while compensating for the Muzzle’s downsides).

Next, you have to use the 45 Round Mag with the ISO 45 to ensure you have enough ammo to take down your opponents. After that, go with the SK-3 Cheetah Stock, which improves your sprint speed, crouch movement speed, aim walking speed, and ADS times. Finish off the build with the EXP Shear Rear Grip for yet another boost to ADS speed and sprint-to-fire times, making it feel snappy.

Joseph Yaden is a freelance journalist who covers Nintendo, shooters, and horror games. He mostly covers game guides for…

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Best Perk-a-Colas in Modern Warfare 3 zombies, ranked

A lineup of perk sodas from Call of Duty: Modern Warfare 3.

Ever since perks were introduced to the series, they've been a staple in every game mode in Call of Duty. For Call of Duty: Modern Warfare 3, you can obviously pick your perks during multiplayer, but not so in Zombies. This mode has always made perks work slightly differently, using different names, but similar mechanics. This time around, the Perk-a-Colas have returned, and these cans of refreshing soda just so happen to give your character a massive improvement. You can grab one from a vending machine on the map in exchange for your points, but they don't come cheap. Since these perks last you the rest of the match (or until used for some of them), you will want to choose your flavor wisely. These are all nine Perk-a-Colas in Call of Duty: Modern Warfare 3 ranked from best to worst.

It is important to note that the location where each perk machine spawns on the new Zombies map is random for every match. There's no way to know where any specific perk will be, but you can see where perk machines spawn on your map as indicated by a downward pointing arrow.

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Soldier holding weapon in Modern Warfare II.

Few video game series are as influential and popular as Call of Duty. The annualized franchise throws players into fast-paced battles across various historical time periods -- along with fictional eras, as well. Call of Duty has taken us to World War II, the Cold War, a modern setting, and even to the future.

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The best field upgrades for Modern Warfare 3 Zombies

A man holding a mysterious glowing vial.

Call of Duty: Modern Warfare 3's Zombies mode puts a slight twist on the mechanics you are already familiar with. It now plays much more like a souped-up DMZ mode rather than its old round-based format. And Field Upgrades have been modified in terms of both their effects and how you get them just for this game type. There are six different Field Upgrades you can bring into the map and use on a cooldown timer to help improve your chances of survival, but you can only pick one at a time. You will begin the game with only one option, but steadily unlock the rest as you level up. Once you have them all, the question then becomes which is the best Field Upgrade? We've managed to exfiltrate with the answer.

Healing Aura
Regardless of whether or not you're playing with a team or running solo, Healing Aura is no doubt the best Field Upgrade to bring on any Zombie run. When activated, you and any teammates in the area will not only gain immediate healing, but it will also instantly revive any downed teammates. The downside to all this power is that this upgrade has the slowest recharge time and is unlocked at level 19.
Aether Shroud
This is another upgrade that you will be glad to have. Aether Shroud makes you you temporary invisibile to all Zombies. This won't make you invincible, mind you, and PMCs can still take shots, but if you're getting swarmed and have no way to escape, becoming instantly invisible to a bloodthirsty pack of zombies can save your skin more often than you think. This upgrade has a medium recharge rate and is unlocked when you hit level 39.
Frenzied Guard
Just past the halfway mark, Frenzied Guard has a massive upside, but not without some risk. When you pop this Field Upgrade, you instantly repair all your armor, but also draw all the aggression of any enemy nearby for 10 seconds. However, another perk is that anything you kill during this time also repairs your armor, so situationally, it can be great or detrimental. This one recharges slowly, unlocking at level 9.
Frost Blast
Frost Blast does exactly what you expect: it fires a freezing blast that will slow down any enemy you hit with it and deal a bit of damage. It's decent in a pinch, but not a game-changer. You can get it when you hit level 29.
Tesla Storm
An odd ability on paper, Tesla Storm is only good if you have a team working together. Activating it will create a lightning chain between you and your team that will damage and stun enemies that get close to any one of you. It lasts for 10 seconds and can be great in the final moments while holding out for an extraction, but not in other situations. It recharges slowly and is the last upgrade you unlock at level 50.
Energy Mine
This is your default Field Upgrade, so it makes sense that it's the "worst" on the list. Energy Mine isn't exactly bad; you simply lay down a mine that does what a mine does -- explodes. It's just that setting up traps like this in Zombies isn't all that applicable except when kiting a boss around or waiting for the helicopter. It has a medium recharge speed.