HomeGuidesCall of Duty: Modern Warfare III (2023)
Best MW3 MX9 loadout and class setupThis is the best MX9 build in Modern Warfare 3 right now
This is the best MX9 build in Modern Warfare 3 right now
Image credit:Rock Paper Shotgun/Activision
Image credit:Rock Paper Shotgun/Activision

Looking for the best MX9 loadout in Modern Warfare 3?While the MX9 may not be to everyone’s taste, thisSMGhas a solid rate of fire, mobility and handling stats which make it a smooth experience, optimal for close to mid-range combat.These stats can be elevated further when paired with the right attachments and equipment, so join us as we explore the best MX9 loadout inCall Of Duty: Modern Warfare 3to get the most out of this SMG.Warzone 2 - Ultimate Beginner’s Guide | Everything You Need To Know About Warzone & DMZCheck out our ultimate beginner’s guide for Warzone 2.0. Join vid bud Liam as he gives you all the tips and tricks you need to survive within Warzone and DMZ.Watch on YouTubeWhy use the MX9 in MW3?One of the great things about the MX9 is its subsonic ammo which leaves no visible tracers and hides kill skulls from the enemy team. As such, if you’re looking to optimise for a stealth build, the MX9 can be a great addition to your repertoire. Besides this, the MX9 caters mostly to a close to mid-range build, so we’ve chosen attachments to optimise the gun’s damage range, bullet velocity, accuracy, mobility, and handling, making it a powerhouse in close combat but light enough for run-and-gun situations.Best MX9 loadout in MW3Muzzle:Singuard MKVBarrel:16.5" Bruen S901Laser:VLK LZR 7MWComb:FTAC C11 RiserMagazine:32 Round MagStarting strong with theSinguard MKVmuzzle, this is arguably the most important attachment for this MX9 loadout as it suppresses your shots while adding bullet velocity, damage range, and recoil smoothness. Pair this with the16.5" Bruen S901barrel to further improve the MX9’s bullet velocity, damage range and movement speed.Although these attachments make the MX9 experience slightly more sluggish, we’ve added theVLK LZR 7MWlaser andFTAC C11 Risercomb to increase ADS speed and sprint to fire speed, which will help round it out and bring it back up to scratch.Lastly, we’ve opted for the32 Round Mag, an improvement to the MX9’s standard 25-round, giving you more shots to capitalise on the improved fire rate before having to bunker down and reload. Although it may not sound like a particularly exciting attachment, room for extra bullets can quite literally mean life or death.Image credit:Rock Paper Shotgun/ActivisionBest MX9 class setup: Secondary weaponFJX Imperium, Longbow.Thanks to its aptitude with close to mid-range combat, we suggest picking up something long-ranged to complete the build. Some of thebest sniper rifles in Modern Warfare 3currently are theFJX ImperiumandLongbowthanks to their all-around great stats.The FJX Imperium is a quickscoper’s dream, with one-shot damage potential and smooth handling and mobility stats, which will benefit you as you swap between that and the MX9 for any conflicts closer to home. Similarly, theLongbowhas enjoyed popularity due to its consistent damage, range, ADS, sprint-to-fire and mobility stats.Best MX9 class setup: Perks and EquipmentOverkill Vest, Marksman Gloves, Stalker Boots, Mag Holster, Battle Rage, Frag Grenade.To make sure you have a long-ranged option in your loadout, consider either theOverkill Vestor Gunner Vest which will allow you to equip a second primary weapon instead of a standard sidearm. Of the twovests, the Overkill has a higher unlock requirement but is well worth the effort, with it you can also get increased weapon swap speed and the ability to reload whilst sprinting.When deciding betweengloves, we think theMarksman Glovesare a great choice due to the reduced flinch and sway while ADS. This is the best option left for this build, other gloves like the Commando and Quick-Grip cannot be applied to the Overkill Vest as perks do not stack, unfortunately.We’ve paired these with theStalker Bootsfor increased strafe and ADS movement speed, and theMag Holsterfor improved reload speed. After all, the key to this build is speed.Lastly, you’ll needLethalandTacticalequipment to round off the loadout. ConsiderBattle Ragefor the extra health regen, resistance to Tactical equipment and Tactical Sprint refresh. All of these boosts are particularly helpful for keeping you alive within close combat. TheFrag Grenadeis always a good choice for an extra high-damage burst to clear out any open or indoor areas and buy yourself some getaway time.For more Modern Warfare tips and tricks, check out our guide to thebest perksin-game for optimal loadouts.Image credit:Rock Paper Shotgun/ActivisionBest MX9 alternatives in Modern Warfare 3Lachmann Sub.If you’re looking for a close to mid-rangeSMGlike the MX9 which packs more of a punch, consider theLachmann Sub, an absolute powerhouse that focuses on speed and mobility, giving it generous time-to-kill stats. The Lachmann Sub enjoyed much popularity in Modern Warfare 2 and thanks to the ‘carry forward’ system, you can get it in your Modern Warfare 3 game too.That rounds off our guide to the best MX9 build in Modern Warfare 3. Get a better idea of the full gun meta with our list of thebest guns in Modern Warfare 3, and thebest loadouts in MW3.
Looking for the best MX9 loadout in Modern Warfare 3?While the MX9 may not be to everyone’s taste, thisSMGhas a solid rate of fire, mobility and handling stats which make it a smooth experience, optimal for close to mid-range combat.These stats can be elevated further when paired with the right attachments and equipment, so join us as we explore the best MX9 loadout inCall Of Duty: Modern Warfare 3to get the most out of this SMG.Warzone 2 - Ultimate Beginner’s Guide | Everything You Need To Know About Warzone & DMZCheck out our ultimate beginner’s guide for Warzone 2.0. Join vid bud Liam as he gives you all the tips and tricks you need to survive within Warzone and DMZ.Watch on YouTubeWhy use the MX9 in MW3?One of the great things about the MX9 is its subsonic ammo which leaves no visible tracers and hides kill skulls from the enemy team. As such, if you’re looking to optimise for a stealth build, the MX9 can be a great addition to your repertoire. Besides this, the MX9 caters mostly to a close to mid-range build, so we’ve chosen attachments to optimise the gun’s damage range, bullet velocity, accuracy, mobility, and handling, making it a powerhouse in close combat but light enough for run-and-gun situations.Best MX9 loadout in MW3Muzzle:Singuard MKVBarrel:16.5" Bruen S901Laser:VLK LZR 7MWComb:FTAC C11 RiserMagazine:32 Round MagStarting strong with theSinguard MKVmuzzle, this is arguably the most important attachment for this MX9 loadout as it suppresses your shots while adding bullet velocity, damage range, and recoil smoothness. Pair this with the16.5" Bruen S901barrel to further improve the MX9’s bullet velocity, damage range and movement speed.Although these attachments make the MX9 experience slightly more sluggish, we’ve added theVLK LZR 7MWlaser andFTAC C11 Risercomb to increase ADS speed and sprint to fire speed, which will help round it out and bring it back up to scratch.Lastly, we’ve opted for the32 Round Mag, an improvement to the MX9’s standard 25-round, giving you more shots to capitalise on the improved fire rate before having to bunker down and reload. Although it may not sound like a particularly exciting attachment, room for extra bullets can quite literally mean life or death.Image credit:Rock Paper Shotgun/ActivisionBest MX9 class setup: Secondary weaponFJX Imperium, Longbow.Thanks to its aptitude with close to mid-range combat, we suggest picking up something long-ranged to complete the build. Some of thebest sniper rifles in Modern Warfare 3currently are theFJX ImperiumandLongbowthanks to their all-around great stats.The FJX Imperium is a quickscoper’s dream, with one-shot damage potential and smooth handling and mobility stats, which will benefit you as you swap between that and the MX9 for any conflicts closer to home. Similarly, theLongbowhas enjoyed popularity due to its consistent damage, range, ADS, sprint-to-fire and mobility stats.Best MX9 class setup: Perks and EquipmentOverkill Vest, Marksman Gloves, Stalker Boots, Mag Holster, Battle Rage, Frag Grenade.To make sure you have a long-ranged option in your loadout, consider either theOverkill Vestor Gunner Vest which will allow you to equip a second primary weapon instead of a standard sidearm. Of the twovests, the Overkill has a higher unlock requirement but is well worth the effort, with it you can also get increased weapon swap speed and the ability to reload whilst sprinting.When deciding betweengloves, we think theMarksman Glovesare a great choice due to the reduced flinch and sway while ADS. This is the best option left for this build, other gloves like the Commando and Quick-Grip cannot be applied to the Overkill Vest as perks do not stack, unfortunately.We’ve paired these with theStalker Bootsfor increased strafe and ADS movement speed, and theMag Holsterfor improved reload speed. After all, the key to this build is speed.Lastly, you’ll needLethalandTacticalequipment to round off the loadout. ConsiderBattle Ragefor the extra health regen, resistance to Tactical equipment and Tactical Sprint refresh. All of these boosts are particularly helpful for keeping you alive within close combat. TheFrag Grenadeis always a good choice for an extra high-damage burst to clear out any open or indoor areas and buy yourself some getaway time.For more Modern Warfare tips and tricks, check out our guide to thebest perksin-game for optimal loadouts.Image credit:Rock Paper Shotgun/ActivisionBest MX9 alternatives in Modern Warfare 3Lachmann Sub.If you’re looking for a close to mid-rangeSMGlike the MX9 which packs more of a punch, consider theLachmann Sub, an absolute powerhouse that focuses on speed and mobility, giving it generous time-to-kill stats. The Lachmann Sub enjoyed much popularity in Modern Warfare 2 and thanks to the ‘carry forward’ system, you can get it in your Modern Warfare 3 game too.That rounds off our guide to the best MX9 build in Modern Warfare 3. Get a better idea of the full gun meta with our list of thebest guns in Modern Warfare 3, and thebest loadouts in MW3.
Looking for the best MX9 loadout in Modern Warfare 3?While the MX9 may not be to everyone’s taste, thisSMGhas a solid rate of fire, mobility and handling stats which make it a smooth experience, optimal for close to mid-range combat.
These stats can be elevated further when paired with the right attachments and equipment, so join us as we explore the best MX9 loadout inCall Of Duty: Modern Warfare 3to get the most out of this SMG.
Warzone 2 - Ultimate Beginner’s Guide | Everything You Need To Know About Warzone & DMZCheck out our ultimate beginner’s guide for Warzone 2.0. Join vid bud Liam as he gives you all the tips and tricks you need to survive within Warzone and DMZ.Watch on YouTube
Warzone 2 - Ultimate Beginner’s Guide | Everything You Need To Know About Warzone & DMZ

Why use the MX9 in MW3?
One of the great things about the MX9 is its subsonic ammo which leaves no visible tracers and hides kill skulls from the enemy team. As such, if you’re looking to optimise for a stealth build, the MX9 can be a great addition to your repertoire. Besides this, the MX9 caters mostly to a close to mid-range build, so we’ve chosen attachments to optimise the gun’s damage range, bullet velocity, accuracy, mobility, and handling, making it a powerhouse in close combat but light enough for run-and-gun situations.
Best MX9 loadout in MW3
Starting strong with theSinguard MKVmuzzle, this is arguably the most important attachment for this MX9 loadout as it suppresses your shots while adding bullet velocity, damage range, and recoil smoothness. Pair this with the16.5" Bruen S901barrel to further improve the MX9’s bullet velocity, damage range and movement speed.
Although these attachments make the MX9 experience slightly more sluggish, we’ve added theVLK LZR 7MWlaser andFTAC C11 Risercomb to increase ADS speed and sprint to fire speed, which will help round it out and bring it back up to scratch.
Lastly, we’ve opted for the32 Round Mag, an improvement to the MX9’s standard 25-round, giving you more shots to capitalise on the improved fire rate before having to bunker down and reload. Although it may not sound like a particularly exciting attachment, room for extra bullets can quite literally mean life or death.
Image credit:Rock Paper Shotgun/Activision

Best MX9 class setup: Secondary weapon
FJX Imperium, Longbow.
Thanks to its aptitude with close to mid-range combat, we suggest picking up something long-ranged to complete the build. Some of thebest sniper rifles in Modern Warfare 3currently are theFJX ImperiumandLongbowthanks to their all-around great stats.
The FJX Imperium is a quickscoper’s dream, with one-shot damage potential and smooth handling and mobility stats, which will benefit you as you swap between that and the MX9 for any conflicts closer to home. Similarly, theLongbowhas enjoyed popularity due to its consistent damage, range, ADS, sprint-to-fire and mobility stats.
Best MX9 class setup: Perks and Equipment
Overkill Vest, Marksman Gloves, Stalker Boots, Mag Holster, Battle Rage, Frag Grenade.
To make sure you have a long-ranged option in your loadout, consider either theOverkill Vestor Gunner Vest which will allow you to equip a second primary weapon instead of a standard sidearm. Of the twovests, the Overkill has a higher unlock requirement but is well worth the effort, with it you can also get increased weapon swap speed and the ability to reload whilst sprinting.
When deciding betweengloves, we think theMarksman Glovesare a great choice due to the reduced flinch and sway while ADS. This is the best option left for this build, other gloves like the Commando and Quick-Grip cannot be applied to the Overkill Vest as perks do not stack, unfortunately.
We’ve paired these with theStalker Bootsfor increased strafe and ADS movement speed, and theMag Holsterfor improved reload speed. After all, the key to this build is speed.
Lastly, you’ll needLethalandTacticalequipment to round off the loadout. ConsiderBattle Ragefor the extra health regen, resistance to Tactical equipment and Tactical Sprint refresh. All of these boosts are particularly helpful for keeping you alive within close combat. TheFrag Grenadeis always a good choice for an extra high-damage burst to clear out any open or indoor areas and buy yourself some getaway time.
For more Modern Warfare tips and tricks, check out our guide to thebest perksin-game for optimal loadouts.
Image credit:Rock Paper Shotgun/Activision

Best MX9 alternatives in Modern Warfare 3
Lachmann Sub.
If you’re looking for a close to mid-rangeSMGlike the MX9 which packs more of a punch, consider theLachmann Sub, an absolute powerhouse that focuses on speed and mobility, giving it generous time-to-kill stats. The Lachmann Sub enjoyed much popularity in Modern Warfare 2 and thanks to the ‘carry forward’ system, you can get it in your Modern Warfare 3 game too.
That rounds off our guide to the best MX9 build in Modern Warfare 3. Get a better idea of the full gun meta with our list of thebest guns in Modern Warfare 3, and thebest loadouts in MW3.