- For another variant, see ISO 45.
- For a similarly named assault rifle, see ISO Hemlock.
The ISO is a submachine gun featured in Call of Duty: Modern Warfare, Call of Duty: Modern Warfare II, Call of Duty: Modern Warfare III and Call of Duty: Mobile.
Call of Duty: Modern Warfare
- "Precision crafted 9mm submachine gun with a fast rate of fire. This lightweight and reliable firearm is designed to control the close-range battlefield."
- — In-game description
The ISO was added to Call of Duty: Modern Warfare as part of the Season Five update.
Attachments
Muzzle
- Flash Guard (Lv. 2)
- Tactical Suppressor (Lv. 10)
- Muzzle Brake (Lv. 12)
- Breacher Device (Lv. 16)
- Lightweight Suppressor (Lv. 29)
- Compensator (Lv. 36)
- Monolithic Suppressor (Lv. 51)
Barrel
- FTAC 225mm Dominator (Lv. 15)
- FSS Revolution (Lv. 27)
- ISO 140mm CQB (Lv. 41)
- FSS Nightshade (Lv. 48)
Laser
Optic
- Aim-Op Reflex Sight (Lv. 3)
- Corp Combat Holo Sight (Lv. 5)
- Operator Reflex Sight (Lv. 7)
- Cronen LP945 Mini Reflex (Lv. 13)
- VLK 3.0x Optic (Lv. 17)
- APX5 Holographic Sight (Lv. 21)
- G.I. Mini Reflex (Lv. 25)
- Scout Combat Optic (Lv. 28)
- Monocle Reflex Sight (Lv. 32)
- Solozero NVG Enhanced (Lv. 35)
- Viper Reflex Sight (Lv. 37)
- PBX Holo 7 Sight (Lv. 40)
- 4.0 Flip Hybrid (Lv. 42)
- Solozero Optics Mini Reflex (Lv. 45)
- Merc Thermal Optic (Lv. 49)
- Cronen C480 Pro Optic (Lv. 53)
- Thermal Hybrid (Lv. 55)
Stock
- FORGE TAC Ultralight (Lv. 22)
- FORGE TAC Stalker (Lv. 30)
- FTAC Vagrant (Lv. 43)
- ISO Collapsible (Lv. 50)
Underbarrel
- Commando Foregrip (Lv. 6)
- Merc Foregrip (Lv. 20)
- Tactical Foregrip (Lv. 33)
- Ranger Foregrip (Lv. 44)
- Operator Foregrip (Lv. 54)
Magazine
- 30 Round Mags (Lv. 19)
- 50 Round Drums (Lv. 38)
Rear Grip
- FSS Vice ISO Grip (Lv. 14)
- FTAC Elite ISO Grip (Lv. 26)
- ISO Tac-Form (Lv. 46)
Perks
- Frangible - Disabling (Lv. 4)
- Fast Melee (Lv. 9)
- Recon (Lv. 11)
- FMJ (Lv. 18)
- Frangible - Wounding (Lv. 24)
- Mo' Money (Lv. 31)
- Fully Loaded (Lv. 34)
- Sleight of Hand (Lv. 39)
- Heavy Hitter (Lv. 47)
Blueprints
| Blueprint | Rarity | How to obtain |
|---|---|---|
| Tin Lizzy | Epic | Power Chord Bundle |
| Gun Gun | Epic | Gun Bundle |
| The Conduit | Legendary | Battle Pass Modern Warfare Season 5 Tier 85 |
| Opulence | Legendary | A Comfortable Death Bundle |
| Purgatory | Legendary | Ghost: Grim Reaper Bundle |
| The Anointed | Legendary | Tracer Pack: Yellow Bundle |
Gallery
- For attachment images, see ISO/Attachments.
Call of Duty: Modern Warfare II & Modern Warfare III
- "Sweep the battlefield clean with the high fire rate, maneuverability, and exceptional steadiness of this 9mm SMG."
- — In-game description
The ISO returns in Call of Duty: Modern Warfare II as the ISO 9mm. It was added as part of the Season Six update.
The ISO 9mm is also available in Call of Duty: Modern Warfare III as part of the Modern Warfare II content carryover.
Overview
Zombies
In Modern Warfare III, the ISO 9mm can be brought into Operation Deadbolt via Create-A-Class, at Common rarity and can be found at any rarity via the Mystery Box for 950 Essence. When upgraded via the Pack-a-Punch Machine or with Aetherium Crystals, it becomes the Isotopic Matter.
Attachments
Muzzle
Barrel
- ISO 45 Factory
- 7" Ex Raptor-V2
- 9" PTX Trainer
- 16" XLB-S
- 6" Axeblade
Laser
Optic
Stock
- Res 2
- Mace 650
- Demo Fade Tac
- Torrent Span-9
- Collapsed Stock
Underbarrel
Ammunition
- 9mm Armor Piercing
- 9mm Frangible
- 9mm Hollow Point
- 9mm High Velocity
- 9mm Overpressured +P
Magazine
- 20 Round Mag
- 50 Round Drum
Rear Grip
- Stalwart GX
- Exp Shear
- A30 Stout
Receiver
- ISO 9mm
- ISO 45
- ISO Hemlock
Blueprints
| Blueprint | Image | How to Obtain |
|---|---|---|
| BlackCell Reckoner | 
|
Battle Pass Season Six BlackCell Sector |
| Fallen Angel | 
|
Tracer Pack: Inarius Operator Bundle |
| Necroplasm | 
|
Battle Pass Season Six Sector F10 |
| Necroplasm BlackCell | 
|
Battle Pass Season Six Sector F10 (BlackCell Exclusive) |
Gallery
Call of Duty: Mobile
- "Steady sub-machine gun with high fire rate."
- — In-game description
The ISO returns in Call of Duty: Mobile. It was added in August 2024 as part of the Season 7: Eternal Ghost update.
Multiplayer
The ISO is a more traditional submachine gun, with a high fire rate, medium damage, and higher-than-average mobility. It does 25-23-17-15.
Recoil is low for an SMG, going up and drifting to the right, similarly to the BP50.
In terms of mobility, the base ISO has several of the same stats of the QQ9, including movement speed, sprint speed, ADS speed.
The ISO's attachments are very similar to the attachments available for the CX-9, including an integrally suppressed barrel, a 30-round magazine, and a 50-round drum. Interestingly, the 30-round magazine and 50-round drum have the same reload penalty, meaning that the only difference is in overall movement speed.
The ISO is very interesting in how it matches another submachine gun - the QQ9 - in many statistics. In direct comparison, the ISO exchanges up-close damage for longer overall range and better recoil control. However, when attachments come into play, the QQ9 can beat out the ISO in terms of ADS Speed when both are configured for maximum range.
The ISO overall serves as an alternative QQ9, with worse close-up damage in exchange for better DPS over range.
Attachments
Muzzle
- Tactical Suppressor
- MIP Light Flash Guard
- OWC Light Suppressor
- RTC Light Muzzle Brake
- OWC Light Compensator
- Monolithic Suppressor
Barrel
Optic
- Classic Red Dot Sight
- Red Dot Sight 1
- Classic Holographic Sight
- Tactical Scope
- 3X Tactical Scope 3
- Red Dot Sight 4
- Holographic Sight 2
- Red Dot Sight 2
- 3X Tactical Scope 2
- Red Dot Sight 5
- Holographic Sight 3
- 3X Tactical Scope 1
- Red Dot Sight 3
- Red Dot Sight 6
- Holographic Sight 1
Stock
Perk
- Long Shot
- Sleight of Hand
- Wounding
- Fast Reload Kill
- Wild Hip Fire
- Full Ammo
- FMJ
- Disable
Laser
Underbarrel
Ammunition
Rear Grip
Blueprints
Epic
- Cornerback
- Scrapfire
Legendary
- Fueled
Trivia
Call of Duty: Mobile
- The Scrapfire blueprint's Battle Pass preview image has its rear iron sight pushed much farther forward than intended, with the rear irons placed directly above the magazine well.
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