Ammunition attachments in MW4
Modern Warfare 4 lists 97 community-reported ammunition attachments. 65 of them have their own page below. Activision's weapon sheets give 27 weapons a ammunition slot. CODMunity lists stat changes for 65 of them. Changes the rounds to alter ballistic performance: bullet velocity, damage range, penetration or special effects.
Community-reportedNames, weapons and stat changes from community sites, read November 4, 2026: community-reported and unverified.
Strongest reported effects of ammunition attachments
These come from CODMunity's game data (read November 4, 2026). Each line names the attachment and weapon with the largest reported change to one stat, as a percentage of that weapon's own value, so two weapons with different base values are compared by percent only. Lines marked better move the stat in the direction that helps the player; lines marked worse show the largest cost.
Largest reported improvements
- Largest reported vertical recoil decrease (better): 12 Gauge Slug on the Warlord (Shotgun), −70%.
- Largest reported horizontal recoil decrease (better): 12 Gauge Slug on the Warlord (Shotgun), −70%.
- Largest reported bullet velocity increase (better): .50 Cal High Velocity on the Signal 50 (Sniper Rifle), +20%.
- Largest reported damage range increase (better): .50 Cal High Velocity on the Signal 50 (Sniper Rifle), +6%.
- Largest reported bullet penetration increase (better): 12 Gauge Slug on the Rezi 12 (Shotgun), +200%.
- Largest reported headshot multiplier increase (better): 4.6x30mm Overpressured on the VEL 46 (SMG), +65%.
Largest reported drawbacks
- Largest reported bullet velocity decrease (worse): 12 Gauge Slug on the Rezi 12 (Shotgun), −29%.
- Largest reported damage range decrease (worse): .357 Magnum Snake Shot on the Mojave .357 (Pistol), −10%.
- Largest reported raise speed increase (worse): .357 Magnum Snake Shot on the Mojave .357 (Pistol), +10%.
- Largest reported bullet penetration decrease (worse): 5.56 NATO Overpressured (Overpressured 5.56 NATO ammunition) on the FiNN LMG (LMG), −57%.
- Largest reported total rounds decrease (worse): 12 Gauge Slug on the Rezi 12 (Shotgun), −20%.
Ammunition attachments with a page
The table is sorted by the number of weapons the source lists a stat change for, most first, then by name from A to Z.
| Attachment | Weapons listed | Weapons with a stat change | Largest reported change |
|---|---|---|---|
| 5.56 NATO Armor Piercing | 3 | 3 | Bullet penetration +50% on the Han 86 (better) |
| 5.56 NATO Frangible | 3 | 3 | Bullet penetration −38% on the FiNN LMG (worse) |
| 5.56 NATO High Velocity | 3 | 3 | Bullet velocity +20% on the Han 86 (better) |
| 5.56 NATO Overpressured | 3 | 3 | Bullet penetration −57% on the FiNN LMG (worse) |
| 7.62x54mmR Armor Piercing | 3 | 3 | Bullet penetration +50% on the Type 73 (better) |
| 7.62x54mmR Frangible | 3 | 3 | Bullet penetration −22% on the Type 73 (worse) |
| 7.62x54mmR High Velocity | 3 | 3 | Bullet velocity +20% on the Type 73 (better) |
| 7.62x54mmR Overpressured | 3 | 3 | Bullet penetration −36% on the Mosin-Nagant (worse) |
| 7.62 NATO Armor Piercing | 2 | 2 | Bullet penetration +50% on the Patriot XMR (better) |
| 7.62 NATO Frangible | 2 | 2 | Bullet penetration −38% on the Patriot XMR (worse) |
| 7.62 NATO High Velocity | 2 | 2 | Bullet velocity +20% on the Patriot XMR (better) |
| 7.62 NATO Overpressured | 2 | 2 | Bullet penetration −30% on the Patriot XMR (worse) |
| 9mm Parabellum High Velocity | 2 | 2 | Bullet velocity +20% on the ISO Nightshade (better) |
| 9mm Parabellum Overpressured | 2 | 2 | Bullet penetration −30% on the ISO Nightshade (worse) |
| 12 Gauge Slug | 2 | 2 | Vertical recoil −70% on the Warlord (better) |
| .45 Auto Armor Piercing | 1 | 1 | Bullet penetration +62% on the Krait P68 (better) |
| .45 Auto Frangible | 1 | 1 | Bullet penetration −31% on the Krait P68 (worse) |
| .45 Auto Overpressured | 1 | 1 | Bullet penetration −30% on the Krait P68 (worse) |
| .50 Cal Armor Piercing | 1 | 1 | Bullet penetration +70% on the Signal 50 (better) |
| .50 Cal Frangible | 1 | 1 | Bullet penetration −20% on the Signal 50 (worse) |
| .50 Cal High Velocity | 1 | 1 | Bullet velocity +20% on the Signal 50 (better) |
| .50 Pistol Armor Piercing | 1 | 1 | Bullet penetration +50% on the .50 GS (better) |
| .50 Pistol Frangible | 1 | 1 | Bullet penetration −22% on the .50 GS (worse) |
| .50 Pistol High Velocity | 1 | 1 | Bullet velocity +20% on the .50 GS (better) |
| .50 Pistol Overpressured | 1 | 1 | Bullet penetration −30% on the .50 GS (worse) |
| .57 Cal Armor Piercing | 1 | 1 | Bullet penetration +170% on the Astaroth .57 (better) |
| .57 Cal Frangible | 1 | 1 | Bullet penetration −20% on the Astaroth .57 (worse) |
| .57 Cal High Velocity | 1 | 1 | Bullet velocity +20% on the Astaroth .57 (better) |
| .300 BLK Armor Piercing | 1 | 1 | Bullet penetration +133% on the Axion (better) |
| .300 BLK Overpressured | 1 | 1 | Bullet penetration −30% on the Axion (worse) |
| .338 Magnum Armor Piercing | 1 | 1 | Bullet penetration +50% on the APOC-338 (better) |
| .338 Magnum Frangible | 1 | 1 | Bullet penetration −22% on the APOC-338 (worse) |
| .338 Magnum High Velocity | 1 | 1 | Bullet velocity +20% on the APOC-338 (better) |
| .338 Magnum Overpressured | 1 | 1 | Bullet penetration −30% on the APOC-338 (worse) |
| .357 Magnum Armor Piercing | 1 | 1 | Bullet penetration +50% on the Mojave .357 (better) |
| .357 Magnum Frangible | 1 | 1 | Bullet penetration −38% on the Mojave .357 (worse) |
| .357 Magnum Overpressured | 1 | 1 | Bullet penetration −30% on the Mojave .357 (worse) |
| .357 Magnum Snake Shot | 1 | 1 | Damage range −10% on the Mojave .357 (worse) |
| 4.6x30mm Armor Piercing | 1 | 1 | Bullet penetration +50% on the VEL 46 (better) |
| 4.6x30mm Frangible | 1 | 1 | Bullet penetration −31% on the VEL 46 (worse) |
| 4.6x30mm High Velocity | 1 | 1 | Bullet velocity +20% on the VEL 46 (better) |
| 4.6x30mm Overpressured | 1 | 1 | Headshot multiplier +65% on the VEL 46 (better) |
| 5.8x21mm Armor Piercing | 1 | 1 | Bullet penetration +50% on the X-58 Nyx (better) |
| 5.8x21mm Overpressured | 1 | 1 | Bullet penetration −30% on the X-58 Nyx (worse) |
| 6.8 Wrath Armor Piercing | 1 | 1 | Bullet penetration +50% on the Cronen Squall (better) |
| 6.8 Wrath Frangible | 1 | 1 | Bullet penetration −38% on the Cronen Squall (worse) |
| 6.8 Wrath High Velocity | 1 | 1 | Bullet velocity +20% on the Cronen Squall (better) |
| 6.8 Wrath Overpressured | 1 | 1 | Bullet penetration −30% on the Cronen Squall (worse) |
| 6.8x43mm Armor Piercing | 1 | 1 | Bullet penetration +50% on the Hyeon Burst (better) |
| 6.8x43mm Frangible | 1 | 1 | Bullet penetration −31% on the Hyeon Burst (worse) |
| 6.8x43mm High Velocity | 1 | 1 | Bullet velocity +20% on the Hyeon Burst (better) |
| 6.8x43mm Overpressured | 1 | 1 | Bullet penetration −30% on the Hyeon Burst (worse) |
| 7.62 Soviet Armor Piercing | 1 | 1 | Bullet penetration +50% on the Kastov 762 (better) |
| 7.62 Soviet Frangible | 1 | 1 | Bullet penetration −38% on the Kastov 762 (worse) |
| 7.62 Soviet High Velocity | 1 | 1 | Bullet velocity +20% on the Kastov 762 (better) |
| 7.62 Soviet Overpressured | 1 | 1 | Bullet penetration −57% on the Kastov 762 (worse) |
| 8.6mm Blackout Armor Piercing | 1 | 1 | Bullet penetration +8% on the Oris 8.6 (better) |
| 8.6mm Blackout Frangible | 1 | 1 | Bullet penetration −31% on the Oris 8.6 (worse) |
| 9mm Makarov Armor Piercing | 1 | 1 | Bullet penetration +133% on the Wz.55 Striga (better) |
| 9mm Makarov Overpressured | 1 | 1 | Bullet penetration −30% on the Wz.55 Striga (worse) |
| 9mm Parabellum Armor Piercing | 1 | 1 | Bullet penetration +50% on the ISO Nightshade (better) |
| 12.7x55mm Armor Piercing | 1 | 1 | Bullet penetration +50% on the Oden (better) |
| 12.7x55mm Frangible | 1 | 1 | Bullet penetration −38% on the Oden (worse) |
| 12.7x55mm High Velocity | 1 | 1 | Bullet velocity +20% on the Oden (better) |
| 12.7x55mm Overpressured | 1 | 1 | Bullet penetration −30% on the Oden (worse) |
Weapons with a ammunition slot
Activision's launch weapon sheets give 27 weapons a ammunition slot. ISO Trace, X-58 Void, Type 73 Assault, and Signal Inferno block this slot while equipped.
Reported without a page of their own
32 ammunition attachments in the list has no reported stat change and is in no popular build, so it has no page. The name and weapons are all the sources give.
Frequently asked questions
What does a ammunition attachment do in MW4?
Changes the rounds to alter ballistic performance: bullet velocity, damage range, penetration or special effects. The effects below come from community data and are unverified.
How many ammunition attachments are there?
Community sites report 97 ammunition attachments in MW4. Activision has not published its list, so the real number is unknown. 65 of them have a page on this site.
Which ammunition attachment has the largest reported vertical recoil change?
12 Gauge Slug on the Warlord, at −70% (better), according to CODMunity's game data. That is community-reported and unverified.
Which weapons have a ammunition slot?
Han 86, M4, Hyeon Burst, Patriot XMR, Kastov 762, Oden, Axion, Cronen Squall, ISO Nightshade, VEL 46, Wz.55 Striga, X-58 Nyx, Rezi 12, Warlord, FiNN LMG, Type 73, APOC-338, MAR-9, Oris 8.6, Mosin-Nagant, KG-7 Vulcan, Astaroth .57, Signal 50, SANG 9mm, Krait P68, .50 GS, and Mojave .357.