Mugi HYU-90 228mm attachment in MW4
The Mugi HYU-90 228mm is a barrel attachment (“Short Barrel”) that community sites list for one weapon: X-58 Nyx. CODMunity lists a stat change on 1 of them; the largest is bullet velocity −11% on the X-58 Nyx (worse). No popular build that CODMunity lists uses it.
Community-reportedwzranked, ggranked, and CODMunity, read . Unverified, not Activision data.
Weapons that can equip the Mugi HYU-90 228mm
Activision publishes no compatibility list; 3 community sources report this weapon. No weapon level is reported.
| Weapon | Class | Weapon level | Stats with a listed change |
|---|---|---|---|
| X-58 Nyx | SMG | bullet velocity (moderate, worse), damage range (moderate, worse), ADS speed (moderate, better), ADS out speed (moderate, better), vertical recoil (moderate, worse), horizontal recoil (moderate, worse), vertical gun kick (moderate, worse), and horizontal gun kick (moderate, worse), and 11 more |
What the Mugi HYU-90 228mm changes
Percent changes are relative to the base value with nothing attached (CODMunity, read November 4, 2026).
| Weapon | Stat | Base | With it | Change |
|---|---|---|---|---|
| X-58 Nyx | Bullet velocity | 450 m/s | 401 m/s | −11% (worse) |
| Damage range | 100% | 89% | −11% (worse) | |
| ADS speed | 255 ms | 230 ms | −10% (better) | |
| Vertical recoil | 36.0 | 39.6 | +10% (worse) | |
| Horizontal recoil | 10.5 | 11.6 | +10% (worse) | |
| Movement speed | 4.74 m/s | 5.02 m/s | +6% (better) | |
| Sprint to fire speed | 110 ms | 103 ms | −6% (better) | |
| ADS movement speed | 3.26 m/s | 3.33 m/s | +2% (better) | |
| Sprint speed | 6.27 m/s | 6.33 m/s | +1% (better) |
Smaller changes are left out of the table: 10 other stats on the X-58 Nyx.
How it ranks among barrel attachments
Its largest change on each weapon, compared with the other barrel attachments the source lists that stat for.
- X-58 Nyx: its moderate bullet velocity change (worse) is the weakest of 3 barrel attachments.
Pros and cons the sources list
None reported, which is different from having none.
Popular builds that use the Mugi HYU-90 228mm
No popular build listed by CODMunity uses the Mugi HYU-90 228mm. That says nothing about how it performs; most listed attachments are in no popular build.
Frequently asked questions
What does the Mugi HYU-90 228mm do in MW4?
CODMunity lists 19 stat changes for it across 1 weapon: 13 better and 6 worse. The largest is bullet velocity −11% on the X-58 Nyx (worse).
Which weapons can use the Mugi HYU-90 228mm?
Community sites list X-58 Nyx. Activision has not published a compatibility list.
Is the Mugi HYU-90 228mm in a popular build?
No. None of the popular builds that CODMunity lists uses it.