75 Round Box Mag attachment in MW4
The 75 Round Box Mag is a magazine attachment that community sites list for one weapon: FiNN LMG. CODMunity lists a stat change on 1 of them; the largest is magazine size −25% on the FiNN LMG (worse). No popular build that CODMunity lists uses it.
Community-reportedggranked and CODMunity, read . Unverified, not Activision data.
Weapons that can equip the 75 Round Box Mag
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 |
|---|---|---|---|
| FiNN LMG | LMG | magazine size (large, worse), reload time (large, better), total rounds (moderate, better), sprint to fire speed (small, better), ADS movement speed (small, better), ADS speed (small, better), ADS out speed (small, better), and movement speed (minor, better), and 4 more |
What the 75 Round Box Mag changes
Percent changes are relative to the base value with nothing attached (CODMunity, read November 4, 2026).
| Weapon | Stat | Base | With it | Change |
|---|---|---|---|---|
| FiNN LMG | Magazine size | 100 rounds | 75 rounds | −25% (worse) |
| Reload time | 6270 ms | 4891 ms | −22% (better) | |
| Sprint to fire speed | 237 ms | 223 ms | −6% (better) | |
| ADS movement speed | 2.03 m/s | 2.11 m/s | +4% (better) | |
| ADS speed | 400 ms | 384 ms | −4% (better) | |
| Movement speed | 4.38 m/s | 4.42 m/s | +1% (better) | |
| Sprint speed | 5.82 m/s | 5.88 m/s | +1% (better) |
Smaller changes are left out of the table: 5 other stats on the FiNN LMG.
How it ranks among magazine attachments
Its largest change on each weapon, compared with the other magazine attachments the source lists that stat for.
- FiNN LMG: its large magazine size change (worse) is the weakest of 2 magazine attachments.
Pros and cons the sources list
None reported, which is different from having none.
Popular builds that use the 75 Round Box Mag
No popular build listed by CODMunity uses the 75 Round Box Mag. That says nothing about how it performs; most listed attachments are in no popular build.
Frequently asked questions
What does the 75 Round Box Mag do in MW4?
CODMunity lists 12 stat changes for it across 1 weapon: 11 better and 1 worse. The largest is magazine size −25% on the FiNN LMG (worse).
Which weapons can use the 75 Round Box Mag?
Community sites list FiNN LMG. Activision has not published a compatibility list.
Is the 75 Round Box Mag in a popular build?
No. None of the popular builds that CODMunity lists uses it.