LM Deadstop-99 attachment in MW4
The LM Deadstop-99 is a muzzle attachment (“Horizontal Comp”) that community sites list for 2 weapons: Astaroth .57 and Signal 50. CODMunity lists a stat change on 2 of them; the largest is horizontal recoil −25% on the Astaroth .57 (better). No popular build that CODMunity lists uses it.
Community-reportedggranked and CODMunity, read . Unverified, not Activision data.
Weapons that can equip the LM Deadstop-99
Activision publishes no compatibility list; 2 community sources report these 2 weapons. No weapon level is reported.
| Weapon | Class | Weapon level | Stats with a listed change |
|---|---|---|---|
| Astaroth .57 | Sniper Rifle | horizontal gun kick (large, better), horizontal recoil (large, better), ADS out speed (small, worse), and ADS speed (minor, worse) | |
| Signal 50 | Sniper Rifle | horizontal gun kick (large, better), horizontal recoil (large, better), ADS speed (minor, worse), and ADS out speed (minor, worse) |
What the LM Deadstop-99 changes
Percent changes are relative to the base value with nothing attached (CODMunity, read November 4, 2026).
| Weapon | Stat | Base | With it | Change |
|---|---|---|---|---|
| Astaroth .57 | Horizontal recoil | 4.1 | 3.1 | −25% (better) |
| ADS speed | 603 ms | 615 ms | +2% (worse) | |
| Signal 50 | Horizontal recoil | 8.4 | 6.3 | −25% (better) |
| ADS speed | 590 ms | 602 ms | +2% (worse) |
Smaller changes are left out of the table: 2 other stats on the Astaroth .57 and 2 other stats on the Signal 50.
Changes across weapons
The stats it changes on 2 weapons, with the lowest and highest change.
| Stat | Weapons | Lowest change | Highest change | Verdicts |
|---|---|---|---|---|
| Horizontal recoil | 2 | −25% | −25% | 2 better, 0 worse |
| ADS speed | 2 | +2% | +2% | 0 better, 2 worse |
| Horizontal gun kick | 2 | −30% | −30% | 2 better, 0 worse |
| ADS out speed | 2 | +2% | +3% | 0 better, 2 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.
- Astaroth .57: its large horizontal recoil change (better) is the best of 4 muzzle attachments.
- Signal 50: its large horizontal recoil change (better) is the best of 4 muzzle attachments.
Pros and cons the sources list
None reported, which is different from having none.
Popular builds that use the LM Deadstop-99
No popular build listed by CODMunity uses the LM Deadstop-99. That says nothing about how it performs; most listed attachments are in no popular build.
Frequently asked questions
What does the LM Deadstop-99 do in MW4?
CODMunity lists 8 stat changes for it across 2 weapons: 4 better and 4 worse. The largest is horizontal recoil −25% on the Astaroth .57 (better).
Which weapons can use the LM Deadstop-99?
Community sites list Astaroth .57 and Signal 50. Activision has not published a compatibility list.
Is the LM Deadstop-99 in a popular build?
No. None of the popular builds that CODMunity lists uses it.