Best ISO classes in Modern Warfare and Warzone

Discover what could make the ISO the best gun in Call of Duty this year.

Infinity Ward adding the ISO to the laundry list of submachine guns speaks to the high level of detail and customization it wants you to have when picking out a weapon. Although joining many others, its nothing like the rest. It may feel familiar as it is like a balanced fusion of the MP5 and MP7 – which we believe both are in the top three in their class. We’ll need time to analyze where the ISO ranks, but there is a clear idea of what attachments make the ISO a killer part of your loadout. Whether you primarily play Warzone or traditional multiplayer, this is what you will need on the gun to thrive and survive.

Best ISO loadout for Modern Warfare

If you’ve seen our other SMG loadout suggestions, this will look similar. However, the ISO’s damage and accuracy is higher than the MP7’s but lower than the MP5’s. This is mostly due to its fire rate and mobility being on par with the UZI. It’s surely a Frankenstein, of sorts, but you will get used to it quicker than expected. For traditional multiplayer, your goal will be to boost the gun’s accuracy to make for blazing-fast kills – even if it isn’t done quietly.

  • Barrel: FSS Nightshade
  • Laser: Tac Laser
  • Underbarrel: Merc Foregrip
  • Ammunition: 30 Round Mags
  • Stock: FTAC Vagrant
  • Perk 1: Scavenger
  • Perk 2: Ghost
  • Perk 3: Tracker

We recommend that, if you play short-round games (ex: Search and Destroy), substitute the 30 Round Mags for the FTAC Elite ISO Grip – ultimately favoring more control over the number of bullets. When running into snipers in the new long-range maps, C4s will come as handy lethal to blow them away.

Best ISO loadout for Warzone

The ISO isn’t the most compatible weapon for the battle royale. It’s far too loud and is mainly used for those who rush opponents. So, if you still desire to use it in Warzone, you’ll have to slow down your play-style and alter it to nail long-range shots with precision.

  • Barrel: FSS Nightshade
  • Rear Grip: ISO Tac-Form
  • Underbarrel: Ranger Foregrip
  • Ammunition: 50 Round Mags
  • Stock: FORGE TAC Stalker
  • Perk 1: Cold-Blooded
  • Perk 2: Ghost
  • Perk 3: Shrapnel

Because the class weakens the mobility of the ISO, a Renetti as your secondary will be great for finishing off close, weakened opponents. Feel free to use whichever lethal and tactical you wish, but a Heartbeat Sensor is always useful in the mode.

The ISO is a brand new weapon from Season Five and can be unlocked for free once players have reached Tier 15 of the battlepass.