5.56 NATO Overpressured attachment in MW4
The 5.56 NATO Overpressured is a ammunition attachment (“Overpressured 5.56 NATO ammunition”) that community sites list for 3 weapons: Han 86, M4, and FiNN LMG. CODMunity lists a stat change on 3 of them; the largest is bullet penetration −57% on the FiNN LMG (worse). It is in 1 popular build that CODMunity lists.
Community-reportedDMZ Codex, ggranked, and CODMunity, read . Unverified, not Activision data.
Weapons that can equip the 5.56 NATO Overpressured
Activision publishes no compatibility list; 3 community sources report these 3 weapons. DMZ Codex reports weapon level 3 on the M4.
| Weapon | Class | Weapon level | Stats with a listed change |
|---|---|---|---|
| Han 86 | Assault Rifle | bullet penetration (large, worse) | |
| M4 | Assault Rifle | 3 | bullet penetration (large, worse) |
| FiNN LMG | LMG | bullet penetration (large, worse) |
What the 5.56 NATO Overpressured changes
Percent changes are relative to the base value with nothing attached (CODMunity, read November 4, 2026).
Changes across weapons
The stats it changes on 3 weapons, with the lowest and highest change.
| Stat | Weapons | Lowest change | Highest change | Verdicts |
|---|---|---|---|---|
| Bullet penetration | 3 | −57% | −30% | 0 better, 3 worse |
How it ranks among ammunition attachments
Its largest change on each weapon, compared with the other ammunition attachments the source lists that stat for.
- Han 86: its large bullet penetration change (worse) is in the lower half of 3 ammunition attachments.
- M4: its large bullet penetration change (worse) is in the lower half of 3 ammunition attachments.
- FiNN LMG: its large bullet penetration change (worse) is the weakest of 3 ammunition attachments.
Pros and cons the sources list
None reported, which is different from having none.
Popular builds that use the 5.56 NATO Overpressured
CODMunity lists 1 popular build that use it, all for Multiplayer. The styles are Apex Attachment. The same builds also use muzzle, magazine, rear grip, and laser attachments.
| Weapon | Mode and style | Tier | Other attachments | Builder |
|---|---|---|---|---|
| Han 86 | Multiplayer, Apex Attachment with Apex Attachment | Viable | Muzzle: FSS IS300, Magazine: 45 Round Mag, Rear Grip: FTAC Griplord 80, and Laser: XRK Clutch-LS | Open in the builder: Han 86, Apex Attachment |
Builds are community-reported and unverified.
Frequently asked questions
What does the 5.56 NATO Overpressured do in MW4?
CODMunity lists 3 stat changes for it across 3 weapons: 0 better and 3 worse. The largest is bullet penetration −57% on the FiNN LMG (worse).
Which weapons can use the 5.56 NATO Overpressured?
Community sites list Han 86, M4, and FiNN LMG. Activision has not published a compatibility list.
Is the 5.56 NATO Overpressured in a popular build?
Yes. CODMunity lists it in 1 popular build, on Han 86.