Schlager HVOX-80 attachment in MW4
The Schlager HVOX-80 is a stock attachment (“Light Stock”) that community sites list for one weapon: MAR-9. CODMunity lists a stat change on 1 of them; the largest is ADS movement speed +14% on the MAR-9 (better). It is in 2 popular builds that CODMunity lists.
Community-reportedggranked and CODMunity, read . Unverified, not Activision data.
Weapons that can equip the Schlager HVOX-80
Activision publishes no compatibility list; 2 community sources report this weapon. No weapon level is reported.
| Weapon | Class | Weapon level | Stats with a listed change |
|---|---|---|---|
| MAR-9 | Marksman Rifle | ADS gun bob (large, worse), ADS idle sway (large, worse), ADS movement speed (moderate, better), crouch movement speed (small, better), strafe speed (small, better), movement speed (small, better), firing movement speed (small, better), and flinch received (small, worse), and 2 more |
What the Schlager HVOX-80 changes
Percent changes are relative to the base value with nothing attached (CODMunity, read November 4, 2026).
| Weapon | Stat | Base | With it | Change |
|---|---|---|---|---|
| MAR-9 | ADS movement speed | 2.10 m/s | 2.39 m/s | +14% (better) |
| Movement speed | 4.41 m/s | 4.59 m/s | +4% (better) | |
| Sprint speed | 5.93 m/s | 6.05 m/s | +2% (better) |
Smaller changes are left out of the table: 7 other stats on the MAR-9.
How it ranks among stock attachments
Its largest change on each weapon, compared with the other stock attachments the source lists that stat for.
- MAR-9: its moderate ADS movement speed change (better) is the best of 2 stock attachments.
Pros and cons the sources list
None reported, which is different from having none.
Popular builds that use the Schlager HVOX-80
CODMunity lists 2 popular builds that use it, all for Multiplayer. The styles are Mobility. The same builds also use barrel, magazine, rear grip, and laser attachments.
| Weapon | Mode and style | Tier | Other attachments | Builder |
|---|---|---|---|---|
| MAR-9 | Multiplayer, Mobility | Very good | Barrel: Bruen Reaper-X, Magazine: 10 Round Mag, Rear Grip: Hanbit AGRS-1 Pro, and Laser: SZ Gen.6 PEQ | Open in the builder: MAR-9, Mobility |
| MAR-9 | Multiplayer, Mobility with Apex Attachment | Very good | Barrel: Bruen Reaper-X, Magazine: 30 Round Mag, Rear Grip: Hanbit AGRS-1 Pro, and Laser: SZ Gen.6 PEQ | Open in the builder: MAR-9, Mobility |
Builds are community-reported and unverified.
Frequently asked questions
What does the Schlager HVOX-80 do in MW4?
CODMunity lists 10 stat changes for it across 1 weapon: 7 better and 3 worse. The largest is ADS movement speed +14% on the MAR-9 (better).
Which weapons can use the Schlager HVOX-80?
Community sites list MAR-9. Activision has not published a compatibility list.
Is the Schlager HVOX-80 in a popular build?
Yes. CODMunity lists it in 2 popular builds, on MAR-9.