Best Modern Warfare 3 MX9 loadout

A Call of Duty character engaging in gunfire with an MX9
Credit: Sledgehammer Games

A Call of Duty character engaging in gunfire with an MX9
Credit: Sledgehammer Games
January 10, 2024: With the MW3 cycle well underway, we've adjusted the best MX9 loadout to reflect the current multiplayer meta.

Looking for the best Modern Warfare 3 MX9 loadout? Read on, as we've begun the process of evaluating the pros and cons of the popular submachine gun. We'll show you the best picks in a pinch and explore the perks, equipment, and attachments you'll want to run based on how you like to play your matches.

With CoD MW3 out in the open, a fresh year of Activision's signature shooter gives you a renewed chance to find the best setup before anyone else finds a way to counter your picks. The MX9 SMG sits tall on our MW3 weapon tier list. Try it out and you'll soon see why.

Before all that, though, why not flesh out your reading list before you dive into your next match? If you want to make a point of killing with largely just a melee weapon, here's the best Modern Warfare 3 Gutter Knife loadout. You'll probably need to know how to change your Modern Warfare 3 loadout before reading on, too. We've got these and so much more all put together in one location - our Modern Warfare 3 walkthrough hub.

A female Modern Warfare 3 character wearing a bandana and holding an assault rifle
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Credit: Sledgehammer Games

What is the best Modern Warfare 3 MX9 loadout?

  • Perks: Infantry / Commando / Running Sneakers / Mag Holster
  • Grenades: Semtex / Flash

Best Modern Warfare 3 MX9 attachments

The best Modern Warfare 3 MX9 loadout will always depend on the attachments you tend to perform the best with. After all, if you take the recommendations at face value, you'll risk using gunsmith options that don't gel with your skill level, understanding of the game, or how you play. Here's the strongest combination to use.

  • Barrel: 508mm Rear Guard
  • Laser: 1MW Quick Fire Laser
  • Comb: FTAC C11 Riser
  • Magazine: 32 Round Mag
  • Rear Grip: STIP-40 Grip

The 508mm Rear Guard barrel improves damage range and bullet velocity, making the MX9 a force to be reckoned with in mid-range combat.

To manage the recoil, the STIP-40 Grip keeps any kick under control which makes all the difference when maintaining high accuracy levels.

For the fastest reaction times possible, the pairing of the 1MW Quick Fire Laser and FTAC C11 Riser gives you quick aim-down sight and sprint-to-fire speeds allowing you to snap onto a target with ease.

Last and by no means least is the 32 Round Mag. The extra bullets enable you to eliminate multiple opponents without the need to take cover and reload.

Best Modern Warfare 3 MX9 perks and equipment

Here are the best perks and equipment to complete your Modern Warfare 3 MX9 loadout:

Perks

  • Vest: Infantry
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  • Gloves: Commando
  • Boots: Running Sneakers
  • Gear: Mag Holster

To ensure you're never caught out in the open at long range, the Infantry vest can keep you running from one building to another. Because of this, you should use the Running sneakers as you'll gain the ability of the Lightweight boots to run faster and can sprint for much longer.

Reloading is important in any loadout, so perks that increase your performance and cut down your reload time are worth their weight in gold. Use the Mag Holster to benefit your reload time and couple it with Commando gloves to ensure you can still reload while sprinting.

Equipment

  • Lethal: Semtex
  • Tactical: Flash Grenade

Tossing a Semtex over a wall and scoring a kill in a split-second is a pro play. You'll see it a lot. Master the map you're on and you'll be able to use this sticky explosive to your advantage by throwing it to the right spot at the right time. In close quarters, popping a Flash Grenade before rushing in can also give you the edge you need for an SMG like the MX9 to really shine.

Is the Modern Warfare 3 MX9 meta?

At launch, there are too many balance issues caused by a lack of large-scale player testing to say whether or not the MX9 is meta in Modern Warfare 3. Patches come thick and fast for the first couple of weeks as the developers adjust to player trends and data. Therefore, it's too early to say whether it's worth investing in the MX9 as a meta pick. Any strengths could be removed quickly.

Once we've accurately tested vitals like recoil, reload speed, magazine size, and rate of fire, we'll be able to at least take an educated early guess. For now, all we can do is weigh it up against history via the MW2 MX9 or the Warzone 2 MX9 loadouts instead.

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