ZLR Cold Echo attachment in MW4
The ZLR Cold Echo is a muzzle attachment (“Tactical Silencer”) that community sites list for 4 weapons: Patriot XMR, Cronen Squall, MAR-9, and Oris 8.6. CODMunity lists a stat change on 4 of them; the largest is ADS speed +6% on the Patriot XMR (worse). It is in 1 popular build that CODMunity lists.
Community-reportedggranked and CODMunity, read . Unverified, not Activision data.
Weapons that can equip the ZLR Cold Echo
Activision publishes no compatibility list; 2 community sources report these 4 weapons. No weapon level is reported.
| Weapon | Class | Weapon level | Stats with a listed change |
|---|---|---|---|
| Patriot XMR | Assault Rifle | ADS speed (small, worse) and ADS out speed (small, worse) | |
| Cronen Squall | Assault Rifle | ADS speed (small, worse) and ADS out speed (small, worse) | |
| MAR-9 | Marksman Rifle | ADS speed (small, worse) and ADS out speed (small, worse) | |
| Oris 8.6 | Marksman Rifle | ADS speed (small, worse) and ADS out speed (small, worse) |
What the ZLR Cold Echo changes
Percent changes are relative to the base value with nothing attached (CODMunity, read November 4, 2026).
| Weapon | Stat | Base | With it | Change |
|---|---|---|---|---|
| Patriot XMR | ADS speed | 280 ms | 297 ms | +6% (worse) |
| Cronen Squall | ADS speed | 305 ms | 320 ms | +5% (worse) |
| MAR-9 | ADS speed | 330 ms | 347 ms | +5% (worse) |
| Oris 8.6 | ADS speed | 260 ms | 276 ms | +6% (worse) |
Smaller changes are left out of the table: 1 other stat on the Patriot XMR, 1 other stat on the Cronen Squall, 1 other stat on the MAR-9, and 1 other stat on the Oris 8.6.
Changes across weapons
The stats it changes on 4 weapons, with the lowest and highest change.
| Stat | Weapons | Lowest change | Highest change | Verdicts |
|---|---|---|---|---|
| ADS speed | 4 | +5% | +6% | 0 better, 4 worse |
| ADS out speed | 4 | +5% | +5% | 0 better, 4 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.
- Patriot XMR: its small ADS speed change (worse) is in the bottom quarter of 5 muzzle attachments.
- Cronen Squall: its small ADS speed change (worse) is in the upper half of 6 muzzle attachments.
- MAR-9: its small ADS speed change (worse) is in the bottom quarter of 5 muzzle attachments.
- Oris 8.6: its small ADS speed change (worse) is in the bottom quarter of 5 muzzle attachments.
Pros and cons the sources list
None reported, which is different from having none.
Popular builds that use the ZLR Cold Echo
CODMunity lists 1 popular build that use it, all for Multiplayer. The styles are Mobility. The same builds also use barrel, bolt, stock, and laser attachments.
| Weapon | Mode and style | Tier | Other attachments | Builder |
|---|---|---|---|---|
| Oris 8.6 | Multiplayer, Mobility with Apex Attachment | Very good | Barrel: EXP Crosstac 22", Bolt: Lightfire-5 Quick Bolt, Stock: No Stock, and Laser: Schlager VISIV-5 | Open in the builder: Oris 8.6, Mobility |
Builds are community-reported and unverified.
Frequently asked questions
What does the ZLR Cold Echo do in MW4?
CODMunity lists 8 stat changes for it across 4 weapons: 0 better and 8 worse. The largest is ADS speed +6% on the Patriot XMR (worse).
Which weapons can use the ZLR Cold Echo?
Community sites list Patriot XMR, Cronen Squall, MAR-9, and Oris 8.6. Activision has not published a compatibility list.
Is the ZLR Cold Echo in a popular build?
Yes. CODMunity lists it in 1 popular build, on Oris 8.6.