The ISO is one of the free DLC weapons available in Call of Duty Modern Warfare. It is a submachine gun with moderate rate of fire and accuracy. Because of the ISO’s tiny magazine, its important to choose your shots and battle within close range.
| Class | Submachine Gun |
| Unlocked | Get 5 kills using an SMG with a holo optic in 7 different matches. |
| Ammo | 20/40 |
| Fire Mode | Full Auto / Semi Auto |
Attachments
| Lv | Slot | Attachment | Pros | Cons |
|---|---|---|---|---|
| 1 | None | |||
| 2 | Muzzle | Flash Guard | Muzzle Flash Concealment | Bullet Velocity |
| 3 | Optic | Aim-Op Reflex Sight | Precision Sight Picture | Aim Down Sight Speed |
| 4 | Perk | Frangible – Disabling | Crippling Power | |
| 5 | Optic | Corp Combat Holo Sight | Precision Sight Picture | Aim Down Sight Speed |
| 6 | Underbarrel | Commando Foregrip | Recoil Stabilization, Aiming Stability | Movement Speed |
| 7 | Optic | Operator Reflex Sight | Precision Sight Picture | Aim Down Sight Speed |
| 8 | Laser | 1mW Laser | Hip Fire Accuracy | |
| 9 | Perk | Fast Melee | Melee Quickness | |
| 10 | Muzzle | Tactical Suppressor | Sound Suppression | Aim Down Sight Speed, Aim Walking Steadiness |
| 11 | Perk | Recon | Enemy Nameplate Range | |
| 12 | Muzzle | Muzzle Brake | Recoil Stabilization | Aim Down Sight Speed, Aiming Stability |
| 13 | Optic | Cronen LP945 Mini Reflex | Precision Sight Picture | Aim Down Sight Speed |
| 14 | Rear Grip | FSS Vice ISO Grip | Aiming Stability, Aim Walking Steadiness | Aim Walking Movement Speed |
| 15 | Barrel | FTAC 225mm Dominator | Damage Range, Bullet Velocity | Aim Down Sight Speed |
| 16 | Muzzle | Breacher Device | Melee Damage | Aim Down Sight Speed, Aim Walking Steadiness |
| 17 | Optic | VLK 3.0x Optic | 3.0x Zoom | Aim Down Sight Speed |
| 18 | Perk | FMJ | Bullet Penetration | |
| 19 | Magazine | 30 Round Mags | Magazine Ammo Capacity | Aim Down Sight Speed, Movement Speed |
| 20 | Underbarrel | Merc Foregrip | Recoil Control, Hip Fire Accuracy | Aim Walking Movement Speed, Aim Down Sight Speed |
| 21 | Optic | APX5 Holographic Sight | Precision Sight Picture | Aim Down Sight Speed |
| 22 | Stock | FORGE TAC Ultralight | Aim Walking Movement Speed | Aiming Stability |
| 23 | Laser | 5mW Laser | Hip Fire Accuracy, Sprint to Fire Speed | Laser Visible to Enemies |
| 24 | Perk | Frangible – Wounding | Inflict Wounding Effect | |
| 25 | Optic | G.I. Mini Reflex | Precision Sight Picture | Aim Down Sight Speed |
| 26 | Rear Grip | FTAC Elite ISO Grip | Aim Down Sight Speed, Sprint to Fire Speed | Aiming Stability |
| 27 | Barrel | FSS Revolution | Damage Range, Bullet Velocity, Recoil Control | Aim Down Sight Speed, Movement Speed |
| 28 | Optic | Scout Combat Optic | 3.25x Zoom | Aim Down Sight Speed |
| 29 | Muzzle | Lightweight Suppressor | Sound Suppression | Damage Range |
| 30 | Stock | FORGE TAC Stalker | Aiming Stability | Aim Walking Movement Speed |
| 31 | Perk | Mo’ Money | Headshot XP | |
| 32 | Optic | Monocle Reflex Sight | Precision Sight Picture | Aim Down Sight Speed |
| 33 | Underbarrel | Tactical Foregrip | Aiming Stability | Movement Speed |
| 34 | Perk | Fully Loaded | Max Starting Ammo | |
| 35 | Optic | Solozero NVG Enhanced | 3.25x Thermal Target Identification | Aim Down Sight Speed |
| 36 | Muzzle | Compensator | Recoil Control | Aim Down Sight Speed, Aiming Stability |
| 37 | Optic | Viper Reflex Sight | Precision Sight Picture | Aim Down Sight Speed |
| 38 | Magazine | 50 Round Drums | Magazine Ammo Capacity | Aim Down Sight Speed, Movement Speed |
| 39 | Perk | Sleight of Hand | Reload Quickness | |
| 40 | Optic | PBX Holo 7 Sight | Precision Sight Picture | Aim Down Sight Speed |
| 41 | Barrel | ISO 140mm CQB | Aim Down Sight Speed, Movement Speed | Bullet Velocity, Recoil Control |
| 42 | Optic | 4.0x Flip Hybrid | Holo & 4.0x Scout Toggle | Aim Down Sight Speed |
| 43 | Stock | FTAC Vagrant | Aim Down Sight Speed | Aiming Stability |
| 44 | Underbarrel | Ranger Foregrip | Recoil Control, Aiming Stability | Aim Walking Movement Speed, Aim Down Sight Speed |
| 45 | Optic | Solozero Optics Mini Reflex | Precision Sight Picture | Aim Down Sight Speed |
| 46 | Rear Grip | ISO Tac-Form | Recoil Control | Aiming Stability |
| 47 | Perk | Heavy Hitter | Melee Stun Power | |
| 48 | Barrel | FSS Nightshade | Damage Range, Recoil Control, Bullet Velocity, Sound Suppression | Aim Down Sight Speed, Movement Speed, Muzzle Slot Blocked |
| 49 | Optic | Merc Thermal Optic | 3.25x Thermal Target Identification | Aim Down Sight Speed |
| 50 | Stock | ISO Collapsible | Movement Speed, Aim Down Sight Speed | Aiming Stability, Recoil Control |
| 51 | Muzzle | Monolithic Suppressor | Sound Suppression, Damage Range | Aim Down Sight Speed, Aim Walking Steadiness |
| 52 | Laser | Tac Laser | Aim Down Sight Speed, Aiming Stability, Aim Walking Steadiness | Laser Visible to Enemies |
| 53 | Optic | Cronen C480 Pro Optic | 3.25x Zoom | Aim Down Sight Speed |
| 54 | Underbarrel | Operator Foregrip | Recoil Control | Aim Down Sight Speed |
| 55 | Optic | Thermal Hybrid | Reflex and 3.25x Thermal Toggle | Aim Down Sight Speed |