Warzone 2 MX9 Build: Best Attachments to Use

This best MX9 build guide for Call of Duty: Warzone 2.0 Season 1 is here for those who want to make sure they're using the fully optimized version of one of the best SMGs in the game.

The MX9 is already one of the better weapons in the close-range meta thanks to its great damage-per-mag output and quick reload. Here are the best attachments to use on the MX9 in Warzone 2 Season 1.

Warzone 2 MX9 Build: Best Attachments to Use

• Muzzle: XTEN RR-40 (-1.40 oz, +1.00 in)
• Barrel: 16.5" Buren S901 (+0.50 lb, +0.40 in)
• Ammunition: 9mm Sub AP (+0.70 g, +9.00 gr)
• Magazine: 32 Round Mag
• Rear Grip: Bruen Q900 Grip (-1.00 oz, -0.45 in)

Starting off the build, the XTEN RR-40 is the muzzle to use here as it vastly improves the MX9's bullet velocity, damage range and recoil smoothness, as well as keeps your position concealed thanks to its sound suppression properties.

We also recommend choosing the 16.5" Buren S901 barrel since it improves the MX9's bullet velocity and damage range once more, as well as its hip fire accuracy and movement speed.

The 9mm Sub AP ammunition add-on is the next best choice as it increases the SMG's bullet penetration and vehicle damage, as well as hides enemy death markers.

For the magazine, the 32 Round Mag attachment is the best choice as it gives the capacity you need to be able to stay aggressive for as long as possible during fights.

Lastly, the Bruen Q900 rear grip is great to have as it drastically improves the MX9's sprint to fire and aim down sight speeds.

For more on Call of Duty, be sure to check out our top five lists:

• Top 5 Call of Duty Games of All Time
• Top 5 Call of Duty Guns of All Time
• Top 5 Call of Duty Maps of All Time
• Top 5 Warzone Moments of All Time
• Top 5 Warzone Seasons of All Time

Additionally, feel free to check out our timeline on the history of the Call of Duty franchise!