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Warzone best M4 builds: the best M4A1 loadouts we've found

Modern Warfare best M4A1 builds:
(Image credit: Activision)

Since it's the first assault rifle you get in the game, a lot of players wonder what the Warzone best M4A1 builds are. Despite it being the first unlocked versatile weapon in both Call of Duty Warzone and Call of Duty Modern Warfare, you need to use the right attachments to make the M4A1 assault rifle one of the best weapons in the game. Here are the Warzone best M4 builds for your loadout in both Warzone and Modern Warfare multiplayer.

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Best M4A1 builds: Warzone

When playing Warzone, there's different aspects of the game you need to take into consideration. Rather than explaining all of the correct attachments to use in Warzone – every style of play listed below is viable, after all – here are some suggestions for how to set up the entire class.

The key perk you want to have on your M4 Warzone class is Overkill. This will allow you to either cater your M4 to close quarters combat or long range play, depending on what your second weapon is. If you opt for a kitted out SMG – the MP5 would be our choice – you'll want a longer scope on your M4, along with attachments that help you retain damage and recoil control at range. Use the accuracy build below for your M4 if this is your choice.

On the other hand, if you want to keep your M4 as a close-medium range weapon, equipping a marksman or sniper rifle as your secondary would be smart. Something like the Kar98K or HBR, especially with a thermal scope, can be devastating in Warzone. Something like the run n gun build below would be ideal for the M4.

For the other perks, in the first slot we'd recommend considering either Scavenger or Double Time. The former is very useful if you're burning through lots of ammo, while sprinting faster can be useful if you don't want to use a vehicle and need to cover lots of ground. In slot three, consider using Shrapnel. No matter which lethal you opt for, having two of them is incredibly useful when clearing out buildings, especially when the safe zone is much smaller.

Best M4A1 builds: Accuracy

Modern Warfare best M4A1 builds: Accuracy

(Image credit: Activision)

Our first of the Modern Warfare best M4A1 builds comes courtesy of Ian "Crimsix" Porter, one of the most decorated and successful Call of Duty pro esports players in the world. Having recently moved to Dallas Empire for the upcoming league, his M4A1 loadout focuses on sacrificing mobility for accuracy, ensuring the gun deals as much damage as possible at range.

Barrel: Stock M16 Grenadier
Optic: Cronen LP945 Mini Reflex
Stock: Singuard Arms Invader
Rear Grip: Rubberized Grip Tape
Underbarrel: Operator Foregrip

Best M4A1 builds: Stealth

Modern Warfare best M4A1 builds: Stealth

(Image credit: Activision)

If you love playing slowly, sitting in corners and pre-aiming doors for enemies to come barreling through, take a look at out stealth-focused build. With this, you'll be able to push for the high killstreaks, especially if you utilise things like the Heartbeat Sensor and Ghost perk.

Barrel: FFS 12.4" Predator
Optic: Thermal Hybrid
Stock: Singuard Arms Invader
Perk: Fully Loaded
Underbarrel: Bipod

Best M4A1 builds: Run n Gun

Modern Warfare best M4A1 builds: Run n Gun

(Image credit: Activision)

For playing fast and frantic, I'd usually suggest rocking an SMG like the MP5. The M4A1 is so good however, that it can be used more than effectively in close quarters combat situations with a build like this, and relies a lot on hip fire kills up close.

Laser: 5mW Laser
Optic: G.I. Mini Reflex
Stock: No Stock
Rear Grip: Stippled Grip Tape
Underbarrel: Merc Foregrip

Best M4A1 builds: All-rounder

(Image credit: Activision)

Sometimes you just want to play as a standard assault soldier who can dabble in all sorts of situations. For that, you'll want this M4A1 build which can perform at range, up close, and everything in-between. The only thing you're sacrificing here is mobility, so while you'll be more than adept in close quarters combat, don't go barging into rooms full of enemies.

Barrel: Corvus Custom Marksman
Optic: Integral Hybrid
Perk: FMJ
Ammunition: 60 Round Mags
Underbarrel: Ranger Foregrip

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One of the resident guide writers around these parts, give me a game and I will write every "how to" I possibly can or die trying. The youngest member of the GamesRadar team, I have an unhealthy addiction to Football Manager, shouting at the TV as Manchester United slowly descend from greatness, and playing Pokemon Go on the bus to and from the office.