Best Modern Warfare 2 MX9 loadout

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Modern Warfare 2 player holding MX9 SMG
Credit: Activision
April 24, 2023: The best MW2 MX9 loadout remains a solid option. Find the best attachments to equip in our guide.

The best Modern Warfare 2 MX9 loadout is a heavily underrated SMG. Infinity Ward's latest multiplayer offering comes with a wealth of new weaponry including some guns that resemble popular choices from the previous titles. In the case of the MX9 submachine gun (SMG), it looks incredibly similar to the AUG SMG from 2019's Modern Warfare.

Armed with subsonic ammunition, the weapon description says the MX9 "performs well at close to mid-range" which is great news for those wanting to deal plenty of damage in a variety of scenarios.

Elsewhere in the world of Modern Warfare 2, check out our guides showcasing the Modern Warfare 2 maps and the best Modern Warfare 2 launcher to deal plenty of damage to the opposition.

What is the best Modern Warfare 2 MX9 loadout?

Attachment Name
MuzzleFTAC Castle Comp
Barrel 508mm Rear Guard
LaserVLK LZR 7mW
OpticSZ Lonewolf Optic
CombFTAC C11 Riser

Rather than addressing one particular area, this build improves everything ranging from damage range to accuracy. Some improvements are only small but they're noticeable when dropping into the action with the MX9 in hand.

Modern Warfare 2's sprint-to-fire time is slow across the board, so a build allowing players to snap onto their intended target as fast as possible is guaranteed to make an impact.

Best Modern Warfare 2 MX9 attachments

The gunsmith in Modern Warfare 2 contains a huge range of attachments allowing players to gear any gun to suit their style of play. Here's an unbeatable combination to use:

  • Muzzle: FTAC Castle Comp
  • Barrel: 508mm Rear Guard
  • Laser: VLK LZR 7MW
  • Optic: SZ Lonewolf Optic
  • Comb: FTAC C11 Riser

This set of attachments includes numerous improvements. The combination of FTAC Castle Comp and Rear Guard barrel reduces horizontal and vertical recoil alongside improving damage range. Elsewhere, the VLK LZR and FTAC C11 Riser join forces for a significant reduction in ADS speed and sprint-to-fire time resulting in incredibly fast reaction times.

Although it may not have the power to dominate long-distance battles, the MX9 is more than capable of excelling in mid-range combat and close-quarters engagements.

Modern Warfare 2 MX9 in gunsmith
click to enlarge
Credit: Screengrab via Activision

How to unlock MX9 in Modern Warfare 2

The MX9 is part of the Bruen Bullpup weapon platform and in order to get your hands on the SMG, you'll need to use a different weapon.

To get your hands on the MX9, rank up the STB 556 to level 13 then you can modify it in the gunsmith.

Best Modern Warfare 2 MX9 perks and equipment


  • Battle Hardened (Base)
  • Double Time (Base)
  • Fast Hands (Bonus)
  • Quick Fix (Ultimate)


  • Frag Grenade (Lethal)
  • Stun Grenade (Tactical)

Is the MX9 good in Modern Warfare 2?

With plenty of competition in the SMG category, the MX9 certainly holds its own thanks to its lightning-fast ADS and sprint-to-fire times. Topped off with a solid damage output, this SMG isn't one to sleep on.

That's all there is to know about the best Modern Warfare 2 MX9 loadout. For more, check out our guide showcasing the best Modern Warfare 2 assault rifle and the latest intel on Modern Warfare 2 double XP events.

For more articles like this, take a look at our Guides , Call of Duty: Modern Warfare 2 , and Shooter Games pages.