How many attachments can you equip in Modern Warfare 4?
Data updated · Latest official patch:
A Modern Warfare 4 weapon takes up to 5 standard attachments, one per attachment type, plus one Apex Attachment that sits outside those 5. No perk on Activision's launch list raises the limit. An Apex Attachment can block some attachment types, so a few builds hold fewer than 5. Activision states the rule in its DMZ deep dive.
The rule: 5 attachments and one Apex Attachment
Activision's DMZ deep dive (June 6, 2026) says the Gunsmith allows up to 5 attachments plus one Apex Attachment. Each attachment type takes one attachment, so a full build uses 5 different types.
The launch weapons post (October 19, 2026) shows a 5-attachment build for Multiplayer. This site has not found a separate Multiplayer statement, so it applies the same limit to Multiplayer and DMZ.
Does the Apex Attachment use one of the 5 slots?
No. The Apex Attachment is the extra one. It is a weapon-specific modification that you unlock by fully levelling its weapon, and it changes how the weapon behaves. There are 28, one for each weapon with a Gunsmith, and the weapon levels needed run from 37 (.50 GS) to 75 (KG-7 Vulcan).
The Apex Attachments page lists all of them with the attachment types each one blocks.
Is there a perk that gives you more attachments?
No. Activision's launch post lists 18 perks across three tiers, and none of their published descriptions mentions attachments. The closest is Overkill, which lets you carry two primary weapons. Activision's description does not say that it changes the attachment limit of either weapon.
When a build holds fewer than 5 attachments
All 28 weapons with a Gunsmith accept at least 7 attachment types, so 5 standard attachments are always possible on their own. The limit only tightens with an Apex Attachment on, because some Apex Attachments block attachment types while equipped.
5 Apex Attachments block no attachment type. They belong to Krait P68, FiNN LMG, Hyeon Burst, KG-7 Vulcan, and Rezi 12.
Axion Clearcut leaves the Axion with 4 of its 9 attachment types open, so that build cannot fill all 5 standard slots. PPSh-41 lands on exactly 5.
PILA, RPG-8, JOKR, PM-40 Anvil, and FSS Carbon Edge 1095 list no attachment types, so they take no attachments.
| Weapon | Types accepted | Apex Attachment | Blocks | Types open with Apex on |
|---|---|---|---|---|
| Axion | 9 | Axion Clearcut | Optic, Laser, Underbarrel, Stock, and Rear Grip | 4 |
| PPSh-41 | 8 | PPSh-41 Ember | Barrel, Underbarrel, and Magazine | 5 |
| Astaroth .57 | 7 | Astaroth .57 Infiltrator | Optic | 6 |
| Han 86 | 9 | Han X20 Skybreaker | Optic, Stock, and Barrel | 6 |
| Wz.55 Striga | 9 | WZ.55 Striga Rampage | Optic, Stock, and Underbarrel | 6 |
| Cronen Squall | 9 | Cronen Maelstrom | Laser and Underbarrel | 7 |
| ISO Nightshade | 9 | ISO Trace | Optic and Ammunition | 7 |
| M4 | 9 | M4 Hurricane | Barrel and Magazine | 7 |
| Mojave .357 | 8 | Mojave Lawless | Trigger Action | 7 |
| Mosin-Nagant | 9 | Mosin Harpoon | Barrel and Muzzle | 7 |
| Oden | 9 | Oden Sentinel | Barrel and Muzzle | 7 |
| SANG 9mm | 8 | SANG Breach | Laser | 7 |
| Type 73 | 9 | Type 73 Assault | Magazine and Ammunition | 7 |
| X-58 Nyx | 9 | X-58 Void | Barrel and Ammunition | 7 |
| .50 GS | 9 | GS Magna | Trigger Action | 8 |
| APOC-338 | 9 | APOC-338 Praetor | Magazine | 8 |
| Kastov 762 | 9 | Kastov ARC | Barrel | 8 |
| Krait P68 | 8 | Krait P68 Commando | Nothing | 8 |
| Patriot XMR | 9 | Patriot XMR Volt | Barrel | 8 |
| Signal 50 | 9 | Signal Inferno | Ammunition | 8 |
| VEL 46 | 9 | VEL 46 Snap | Stock | 8 |
| Warlord | 10 | Warlord Lumen | Optic and Laser | 8 |
| FiNN LMG | 9 | FiNN Adverse | Nothing | 9 |
| Hyeon Burst | 9 | Hyeon Hyperburst | Nothing | 9 |
| MAR-9 | 10 | MAR-9 Auto | Trigger Action | 9 |
| Oris 8.6 | 10 | Oris 8.6 Razor | Underbarrel | 9 |
| KG-7 Vulcan | 10 | KG-7 Drillcharge | Nothing | 10 |
| Rezi 12 | 11 | Rezi 12 Enforcer | Nothing | 11 |
Types open is derived: the types a weapon accepts minus the ones its Apex Attachment blocks.
How to check a build on this site
The class builder applies both rules. It stops at the limit, takes one attachment per type and removes and disables any type the equipped Apex Attachment blocks. A weapon page shows the types that weapon accepts and its Apex Attachment.
Frequently asked questions
How many attachments can you put on a gun in MW4?
Up to 5 standard attachments, one per attachment type, plus one Apex Attachment. Activision states the rule in its DMZ deep dive.
Can you use more than 5 attachments in MW4?
Only through the Apex Attachment, which is the extra one. No perk on Activision's launch list raises the limit, and this site knows of no other way in the rules Activision has published.
Does the Apex Attachment count toward the 5 attachment limit in MW4?
No. It sits outside the 5 standard slots. It can block some attachment types, though, which can leave you with fewer than 5 standard attachments.
Why can’t I add an attachment while my Apex Attachment is on?
That Apex Attachment blocks the attachment type. Axion Clearcut on the Axion, for example, blocks Optic, Laser, Underbarrel, Stock, and Rear Grip. Take the Apex Attachment off to use those types again.
Is the attachment limit the same in Multiplayer and DMZ in MW4?
Activision states the 5 plus one rule in its DMZ deep dive and shows a 5-attachment build in its Multiplayer launch post. This site has not found a separate Multiplayer statement and applies the same limit to both.