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Modern Warfare 4 Apex Attachments: all 28 and how to unlock them

Every Apex Attachment in Modern Warfare 4: the weapon, the max level you need, what it does and what it blocks.

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A soldier with an assault rifle in front of a burning building in Call of Duty: Modern Warfare 4

Quick answer

There are 28 Apex Attachments, one for every primary weapon and pistol. You get one by taking that weapon to its max level, and it does not use one of your five attachment slots. Five of them block nothing, so they cost you nothing in the Gunsmith: Hyeon Hyperburst, Rezi 12 Enforcer, FiNN Adverse, KG-7 Drillcharge and Krait P68 Commando. The pistols are the fastest to unlock, at levels 37 to 44.

Launch numbers. Max levels and blocked slots are the ones from release on 23 October 2026. The beta used different levels.

An Apex Attachment is the prize for finishing a gun. Some are small tweaks. Others turn the weapon into something else, like an assault rifle that snipes or a marksman rifle that sprays. Below is every one, with the level you need and what you give up to run it.

How Apex Attachments work

Each of the 24 primaries and 4 pistols has exactly one. Launchers and the knife have none. The Apex sits in its own slot next to your five normal attachments, so you can fill all five and still add it. The catch is that many Apex Attachments lock out certain attachment types. The Axion Clearcut is the worst for this and takes away five categories.

You can set one up in the Gunsmith in Multiplayer or at the DMZ Forward Operating Base. Weapon levels are shared between the two modes, so it doesn’t matter where you grind.

First-person view of a rifle firing inside a warehouse in Call of Duty: Modern Warfare 4

How to unlock Apex Attachments

Level the weapon until it hits its max. That is the whole requirement, with no challenge or token on top. Open the weapon in the Gunsmith and look at its progression to see how far you are. The max level changes per gun, from 37 on the .50 GS up to 75 on the KG-7 Vulcan.

If you later Prestige a maxed weapon, it goes back to level 1 and its normal attachments lock again. The Apex Attachment stays. In the beta, a few guns had a second Apex, such as the Hyeon Auto and the Kastov 545. Those are gone, and every weapon has one.

Assault rifle Apex Attachments

WeaponApex AttachmentMax levelWhat it doesBlocks
Han 86Han X20 Skybreaker72Adds its own optic and a 20mm launcher. The shell bursts in the air over a target. A shell that hits someone directly does nothing.Optic, Stock, Barrel
M4M4 Hurricane72Swaps in a top-loaded 50-round magazine chambered in 5.7x28mm.Barrel, Magazine
Hyeon BurstHyeon Hyperburst68Fires the first three rounds almost at once, then drops to a slow full-auto rate if you keep holding.Nothing
Patriot XMRPatriot XMR Volt72Underbarrel launcher for taser darts. They don’t kill, but a hit enemy can hardly move.Barrel
Kastov 762Kastov ARC68A barrel with its own optic that fires EMP pulses. Infantry get stunned and vehicles and electronics are disrupted.Barrel
OdenOden Sentinel65Makes the Oden a semi-auto sniper rifle. Comes with a scope, a suppressor and a bipod.Barrel, Muzzle
AxionAxion Clearcut69Chainsaw rear grip, handlebar foregrip and a hip laser, all set up for hipfire and canted aiming.Optic, Laser, Underbarrel, Stock, Rear Grip
Cronen SquallCronen Maelstrom67Underbarrel missile that you steer by where you aim. It does little damage if you fire it without guiding it.Laser, Underbarrel

SMG Apex Attachments

WeaponApex AttachmentMax levelWhat it doesBlocks
ISO NightshadeISO Trace64Rounds tag whoever they hit. You then see where that player is and which way they are moving.Optic, Ammunition
VEL 46VEL 46 Snap60A sling that makes switching weapons very quick. Pair it with Overkill and you get Quick Draw.Stock
Wz.55 StrigaStriga Rampage60You hold one Striga in each hand.Optic, Stock, Underbarrel
PPSh-41PPSh-41 Ember62Underbarrel launcher that fires a burst of incendiary rounds. The fire stays on the ground for a short while.Barrel, Underbarrel, Magazine
X-58 NyxX-58 Void53Subsonic rounds. The gun is far quieter, kills hide the skull icon and enemies get fewer hit direction indicators.Barrel, Ammunition
An operator crouched on a car with a weapon on a city street in Call of Duty: Modern Warfare 4

Shotgun Apex Attachments

WeaponApex AttachmentMax levelWhat it doesBlocks
Rezi 12Rezi 12 Enforcer60Turns it into a pump-action and loads explosive slugs, which gives you more range.Nothing
WarlordWarlord Lumen60A strobe light that turns on as soon as you aim and disorients whoever it hits. It needs time to recharge between uses.Optic, Laser

LMG Apex Attachments

WeaponApex AttachmentMax levelWhat it doesBlocks
FiNN LMGFiNN Adverse59Sends the rate of fire way up. Hold the trigger too long and the gun overheats.Nothing
Type 73Type 73 Assault65Explosive rounds. They hit hard but you carry less ammo.Magazine, Ammunition
APOC-338APOC-338 Praetor56Swaps the box magazine for a belt of ten heavy rounds and locks the gun to semi-auto.Magazine

Marksman rifle Apex Attachments

WeaponApex AttachmentMax levelWhat it doesBlocks
MAR-9MAR-9 Auto73Converts it to full-auto, with lower damage per shot.Trigger Action
Oris 8.6Oris 8.6 Razor70A blade holster on the rifle that gives you quick access to throwing knives.Underbarrel
Mosin-NagantMosin Harpoon69A spring-loaded bayonet that extends your melee lunge. You can also fire the blade out and pick it up again.Barrel, Muzzle
Operators trading fire between server racks in Call of Duty: Modern Warfare 4

Sniper rifle Apex Attachments

WeaponApex AttachmentMax levelWhat it doesBlocks
KG-7 VulcanKG-7 Drillcharge75Charges that drill into a surface before they go off, so they work on people behind cover.Nothing
Astaroth .57Astaroth Infiltrator54An RF scope that detects enemies through walls, but only to a limited depth. The magazine drops to one round.Optic
Signal 50Signal Inferno74Incendiary rounds that do more damage to vehicles and killstreaks.Ammunition

Pistol Apex Attachments

WeaponApex AttachmentMax levelWhat it doesBlocks
SANG 9mmSANG Breach38An underbarrel shotgun that holds one 12-gauge shell. You are restricted to canted aiming with it.Laser
Krait P68Krait P68 Commando38Puts a combat knife in your off hand. Melee is faster, lunges go further and recoil is steadier.Nothing
.50 GSGS Magna37Converts the pistol to full-auto.Trigger Action
Mojave .357Mojave Lawless44Fan the hammer when you hipfire to shoot much faster.Trigger Action

Which ones I would run

Start with the five that block nothing, since they cost you no slots. The FiNN Adverse and Hyeon Hyperburst are the pick of those for general use. The Krait P68 Commando is the one I would take on a pistol, because it adds melee speed and steadier recoil without touching a single attachment.

If you play patiently, the Astaroth Infiltrator is the strongest utility Apex. Seeing through a wall or a doorframe before you swing is worth the one-round magazine, and it only takes your optic away. The X-58 Void is the other one I would grind for, mainly in DMZ where being quiet matters.

I would skip the Striga Rampage unless you enjoy chaos. It blocks three categories and the dual guns will be hard to control. The Axion Clearcut is a similar story. It is built for hipfire and it costs you five slots to do it.

Easiest and hardest to unlock

The four pistol Apex Attachments are the cheapest, between level 37 and 44. The lowest primaries are the X-58 Void at 53, the Astaroth Infiltrator at 54 and the APOC-338 Praetor at 56. The longest grinds are the KG-7 Drillcharge at 75, the Signal Inferno at 74 and the MAR-9 Auto at 73.

All the rest of our Modern Warfare 4 guides are on the game page.

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Guide by

George

George grew up on Dark Souls and Call of Duty, and he still has strong opinions about both. He also plays Arma, where he walks a very long way to get shot by someone he never saw. He says it’s part of the experience.

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