ZLR Reverb90 attachment in MW4
The ZLR Reverb90 is a muzzle attachment (“Vertical Comp”) that community sites list for 5 weapons: Han 86, M4, Hyeon Burst, Axion, and FiNN LMG. CODMunity lists a stat change on 5 of them; the largest is vertical recoil −13% on the Han 86 (better). No popular build that CODMunity lists uses it.
Community-reportedwzranked, ggranked, and CODMunity, read . Unverified, not Activision data.
Weapons that can equip the ZLR Reverb90
Activision publishes no compatibility list; 3 community sources report these 5 weapons. No weapon level is reported.
| Weapon | Class | Weapon level | Stats with a listed change |
|---|---|---|---|
| Han 86 | Assault Rifle | vertical recoil (moderate, better), vertical gun kick (moderate, better), ADS speed (small, worse), and ADS out speed (small, worse) | |
| M4 | Assault Rifle | vertical recoil (moderate, better), vertical gun kick (moderate, better), ADS speed (small, worse), and ADS out speed (small, worse) | |
| Hyeon Burst | Assault Rifle | vertical recoil (moderate, better), vertical gun kick (moderate, better), ADS speed (small, worse), and ADS out speed (small, worse) | |
| Axion | Assault Rifle | vertical recoil (moderate, better), vertical gun kick (moderate, better), ADS speed (small, worse), and ADS out speed (small, worse) | |
| FiNN LMG | LMG | vertical recoil (moderate, better), vertical gun kick (moderate, better), ADS speed (small, worse), and ADS out speed (small, worse) |
What the ZLR Reverb90 changes
Percent changes are relative to the base value with nothing attached (CODMunity, read November 4, 2026).
| Weapon | Stat | Base | With it | Change |
|---|---|---|---|---|
| Han 86 | Vertical recoil | 41.9 | 36.5 | −13% (better) |
| ADS speed | 250 ms | 263 ms | +5% (worse) | |
| M4 | Vertical recoil | 40.6 | 35.3 | −13% (better) |
| ADS speed | 240 ms | 252 ms | +5% (worse) | |
| Hyeon Burst | Vertical recoil | 38.3 | 33.3 | −13% (better) |
| ADS speed | 275 ms | 286 ms | +4% (worse) | |
| Axion | Vertical recoil | 48.9 | 42.5 | −13% (better) |
| ADS speed | 260 ms | 273 ms | +5% (worse) | |
| FiNN LMG | Vertical recoil | 49.0 | 42.6 | −13% (better) |
| ADS speed | 400 ms | 412 ms | +3% (worse) |
Smaller changes are left out of the table: 2 other stats on the Han 86, 2 other stats on the M4, 2 other stats on the Hyeon Burst, 2 other stats on the Axion, and 2 other stats on the FiNN LMG.
Changes across weapons
The stats it changes on 5 weapons, with the lowest and highest change.
| Stat | Weapons | Lowest change | Highest change | Verdicts |
|---|---|---|---|---|
| Vertical recoil | 5 | −13% | −13% | 5 better, 0 worse |
| ADS speed | 5 | +3% | +5% | 0 better, 5 worse |
| Vertical gun kick | 5 | −13% | −13% | 5 better, 0 worse |
| ADS out speed | 5 | +3% | +4% | 0 better, 5 worse |
How it ranks among muzzle attachments
Its largest change on each weapon, compared with the other muzzle attachments the source lists that stat for.
- Han 86: its moderate vertical recoil change (better) is the best of 4 muzzle attachments.
- M4: its moderate vertical recoil change (better) is the best of 4 muzzle attachments.
- Hyeon Burst: its moderate vertical recoil change (better) is the best of 4 muzzle attachments.
- Axion: its moderate vertical recoil change (better) is the best of 4 muzzle attachments.
- FiNN LMG: its moderate vertical recoil change (better) is the best of 5 muzzle attachments.
Pros and cons the sources list
None reported, which is different from having none.
Popular builds that use the ZLR Reverb90
No popular build listed by CODMunity uses the ZLR Reverb90. That says nothing about how it performs; most listed attachments are in no popular build.
Frequently asked questions
What does the ZLR Reverb90 do in MW4?
CODMunity lists 20 stat changes for it across 5 weapons: 10 better and 10 worse. The largest is vertical recoil −13% on the Han 86 (better).
Which weapons can use the ZLR Reverb90?
Community sites list Han 86, M4, Hyeon Burst, Axion, and FiNN LMG. Activision has not published a compatibility list.
Is the ZLR Reverb90 in a popular build?
No. None of the popular builds that CODMunity lists uses it.