MC1 Hardtail attachment in MW4
The MC1 Hardtail is a stock attachment (“Heavy Stock”) that community sites list for one weapon: X-58 Nyx. CODMunity lists a stat change on 1 of them; the largest is ADS movement speed −2% on the X-58 Nyx (worse). No popular build that CODMunity lists uses it.
Community-reportedggranked and CODMunity, read . Unverified, not Activision data.
Weapons that can equip the MC1 Hardtail
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 |
|---|---|---|---|
| X-58 Nyx | SMG | ADS idle sway (large, better), ADS gun bob (large, better), flinch received (moderate, better), and ADS movement speed (minor, worse) |
What the MC1 Hardtail 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 | ADS movement speed | 3.26 m/s | 3.19 m/s | −2% (worse) |
Smaller changes are left out of the table: 3 other stats on the X-58 Nyx.
How it ranks among stock attachments
Its largest change on each weapon, compared with the other stock attachments the source lists that stat for.
- X-58 Nyx: its minor ADS movement speed change (worse) is the weakest of 3 stock attachments.
Pros and cons the sources list
None reported, which is different from having none.
Popular builds that use the MC1 Hardtail
No popular build listed by CODMunity uses the MC1 Hardtail. That says nothing about how it performs; most listed attachments are in no popular build.
Frequently asked questions
What does the MC1 Hardtail do in MW4?
CODMunity lists 4 stat changes for it across 1 weapon: 3 better and 1 worse. The largest is ADS movement speed −2% on the X-58 Nyx (worse).
Which weapons can use the MC1 Hardtail?
Community sites list X-58 Nyx. Activision has not published a compatibility list.
Is the MC1 Hardtail in a popular build?
No. None of the popular builds that CODMunity lists uses it.