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The subject of this article appears in Call of Duty: Black Ops 4 The subject of this article appeared in Zombies mode The subject of this article appears in Blackout The subject of this article appears in Call of Duty: Mobile

The MX9 is a submachine gun featured in Call of Duty: Black Ops 4 and Call of Duty: Mobile.

Call of Duty: Black Ops 4

"Full-auto submachine gun. Balanced fire rate with moderate recoil."
— In-game description


  • Ammo (Blackout): 9mm
  • Operator Mod: None
  • Country of Origin: Germany
  • Manufacturer: Kühn & Schmidt


The MX9 is a middling SMG that boasts mostly average characteristics. Its time-to-kill is about average for the submachine gun category, enabling it to edge out most assault rifles in close quarters with sufficient accuracy. Moderate damage coupled with a high rate of fire enable this weapon to win most engagements in close quarters. However, beyond close range, the MX9's recoil has a tendency to pull the sights off target, and can be difficult to control. This limits the weapon's effective range to strictly close quarters, although the weapon may win medium-range engagements in certain scenarios.

Handling is about average for the SMG category. The MX9 has no particular strengths or weaknesses in regard to reload time, raise time, or ADS time. The 35 rounds in the magazine can be expended rather quickly due to the high RPM, so spraying is not recommended unless as a last resort option. As such, the MX9 can struggle in prolonged gunfights, especially when taking on two or more enemies at a time. The iron sights are mostly fine for close-range engagements, but some users may find them cluttered, so the Reflex is recommended to improve usability.

The Quickdraw and Grip are strong choices, and both improve the MX9's ability to consistently win engagements. However, the AP Rounds and High Caliber fulfill more niche roles that aren't nearly as useful. In the case of the AP Rounds, submachine guns already have low base damage against vehicles and equipment, and other weapons, like assault rifles or light machine guns, are much better suited to an anti-armor role. In the case of High Caliber, the attachment is entirely dependent upon the user's ability to land headshots, and as accuracy is not the MX9's strength, the attachment is not as useful as on other, more accurate weapons.





The MX9 appears in the zombie maps Voyage of Despair, IX, Blood of the Dead, and Classified, where it's available as a weapon within the Mystery Box for 950 points. When upgraded via Pack-a-Punch Machine, it becomes the Nueve Muertes XX with the magazine size increased to 70 rounds and its ammo reserve increased to 350. It is unlocked for customization in the armory al level 25.


Call of Duty: Mobile

"Fully automatic submachine gun. Increased range and reduced recoil."
— Description

The MX9 returns in Call of Duty: Mobile. It was added in July 2021 as part of the Season 6: The Heat update.


The MX9 sports a higher than average fire-rate for SMGs, but it does not surpass weapons like the Fennec. It can earn a consistent four-shot kill in close range, but the Large Caliber ammo is available, decreasing this to a three-shot kill to the torso. Thanks to its higher-than-average firerate, along with consistent damage, it is quite powerful in close range to mid range, even beating out the Fennec if the user has good enough aim. However, the major weakness of the MX9 is a lack of range. It lacks attachments to increase its range, and the damage drop-off is quite severe past 20 meters.

Compared to other SMGs in class, it is more oriented to close-range, but its damage at longer ranges has something to be desired. As it also has vastly different attachments from the rest of its class, the player will need to be aware of how the gun can be modified.

In general, the MX9 serves as a close to mid-range oriented submachine gun with limited usability at long range, and compared to the rest of its class, is more oriented towards mobility in terms of attachments.






Rear Grip







  • Stone Serpent
  • Second Round
  • Spilled
  • Phage
  • Viaje de la Muerte
  • Mech Shark
  • Good Day
  • Neon Rain
  • Voltaic Charge
  • Hell Shredder


  • Heartless
  • Exostatic



  • ".40 Cal" is written on the upper receiver.
  • "Made in Germany", "Kühn & Schmidt" and "Silberner Zahn" can also be seen written on the weapon. "Silberner Zahn" means "Silver Tooth" in German.
  • The MX9 features a titanium constructed CQB mute stick on the right side of the gun.

Call of Duty: Black Ops 4

  • The MX9 using 9mm ammunition in Blackout, despite the .40 Cal written on the upper receiver.
  • The Pack-A-Punched variant of the MX9 "Nueva Muertes XX" translates to "Nine Deaths" from Spanish and the XX is 20 in roman numerals.
  • Originally, the MX9 had a red finish, which was changed to black during development. The "Patriot" variant references this by utilizing the original color scheme.