In Call of Duty Mobile Season 4, one of the more talked-about weapons is the ISO SMG. Despite receiving multiple buffs this season, it still faces tough competition from other top-tier SMGs in multiplayer.
In this article from Item4Gamer, we break down everything you need to know about ISO’s strengths, weaknesses, best attachments, and its placement in the current meta tier list.
Overview of the ISO SMG in Season 4
The ISO is considered a mid-tier SMG. While it has been improved in recent updates, it still struggles to match the performance of meta weapons like the PP19 or CBR4. Its main issues include:
- Obstructive iron sights
- MX9-like horizontal recoil
- Slow bullet velocity and poor ADS accuracy
- Punishing body damage multipliers, especially with leg shots drastically increasing the time-to-kill (TTK)
Because of these factors, players need to aim for upper-body shots to maintain consistent performance.
ISO Performance in Multiplayer
With the right build, ISO can secure 4-shot kills with a 204ms TTK up to 13 meters. If you consistently land upper-body shots, that 4-shot kill range can be extended up to 23.4 meters. However, leg shots will significantly increase your TTK, so precision is key when using this weapon.
Best ISO Multiplayer Loadout
To bring out the full potential of the ISO, the following build is recommended:
- FSS Nightshade – Improves concealment, bullet speed, range, and stability
- ISO Collapsible Stock – Boosts ADS speed and overall mobility
- FSS Vice ISO Grip – Enhances ADS bullet spread
- 50 Round Drums – Increases ammo capacity for sustained fights
- Optic of Preference – Helps improve visibility due to the poor iron sight
This build is designed to overcome the ISO’s weaknesses while maximizing damage output in close-quarters combat.
ISO Tier Placement in Multiplayer
Based on current performance, the ISO most likely falls into the following tiers on the multiplayer tier list:
- Tier 1.5 – Borderline meta; useful but has clear drawbacks or is outclassed
- Tier 2 – Average performance; usable but far from top-tier
While it may not be part of the meta, the ISO can still be effective in the right hands—especially with accurate upper-body shots and a solid setup.
Final Thoughts
The ISO SMG in COD Mobile Season 4 is a weapon with potential, but it requires precise aim and the right attachments to shine. It’s best suited for aggressive players who are comfortable landing upper-body shots and managing horizontal recoil. If you’re looking for something off-meta but still viable, the ISO might just be worth trying.
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