The Best Bruen MK9 Builds In MW3

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  • Aggressive Bruen MK9 Build

The infamous Bruen LMG from MW2019 is back in Call of Duty: Modern Warfare 3, complete with a new suite of attachment options. This weapon became a popular weapon in Warzone for its great mix of mobility and damage.


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While this weapon might not be quite so mobile when initially unlocked, its unique 60 Round Mag attachment and various attachment options can effectively turn the Bruen into an assault rifle. This guide will showcase two builds for the Bruen that make this LMG the perfect long-range weapon or a fun close-range dueling weapon for players who are skilled at managing recoil.


Accuracy Bruen MK9 Build

Bruen MK9 Build
Attachment Pros And Cons
MK. 3 Reflector (Optic)
1mw Artemis Laser (Laser)
Wrathguard Compensator (Muzzle)
  • +Horizontal Recoil
  • +Firing Aim Stability
  • -Damage Range
  • -Bullet Velocity
  • -Vertical Recoil
Kimura RYN-03 Vertical Grip (Underbarrel)
  • +Gun Kick Control
  • +Vertical Recoil
  • +Aiming Idle Stability
  • +Firing Aim Stability
  • -Horizontal Recoil
  • -Sprint to Fire Speed
  • -Aim Down Sights Speed
60 Round Mag (Magazine)
  • +Aim Down Sights Speed
  • +Sprint to Fire Speed
  • +Movement Speed
  • +Reload Quickness

LMGs rarely have the attachment combinations necessary to make them as snappy as assault rifles, but you can easily make LMGs powerful long-range options with recoil control and firing stability attachments. The Bruen MK9 is no different. This build turns this LMG into an accurate long-range weapon with minimal tradeoffs.

The 60 Round Mag is a must for all Bruen builds, as it halves your reload time and greatly lowers your ADS time with only a minor hit to your magazine capacity. For recoil, the Wrathguard Compensator is excellent since it increases your firing stability while cutting down on the Bruen’s diagonal recoil pattern. With the Kimaru RYN-03 Vertical Grip and the 1mw Artemis Laser, this weapon experiences no recoil.

Loadout Recommendations

Perks
Vest Demolition
Gloves Quick-Grip Gloves
Boots Stalker Boots
Gear EOD
Equipment
Secondary Renetti
Tactical Stim
Lethal Breacher Drone
Field Upgrade Trophy System

This loadout allows you to control key locations with a hard-hitting LMG without hurting your close-quarters capabilities. We recommend the Demolition Vest to gain a second Lethal use and the ability to recharge Lethals and Tacticals. Stims will let you instantly heal after a gunfight while Breacher Drones act as a powerful long-range explosive. If you don’t like Breacher Drones, use your favorite Lethal in its place.

Your LMG is ill-suited for close-quarters combat, so we’ll be using the Renetti with its carbine conversion kit to deal with close targets. Paired with the Quick-Grip Gloves for instant weapon swaps, you should have no issue winning any engagement. Use Stalker Boots to strafe in and out of cover faster, and equip EOD to clamp explosive damage. The Trophy System will also help counter enemy equipment.

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Aggressive Bruen MK9 Build

Bruen MK9 Build
Attachment Pros And Cons
7mw Canted Laser (Laser)
  • Canted Laser Aiming
  • +Aiming Stability
  • +Aim Down Sights Speed
  • +Sprint to Fire Speed
  • Laser Visible to Enemies
  • No Tactical Stance
  • -Recoil Stabilization
Bruen 18” Para (Barrel)
  • +Aim Down Sights Speed
  • +Movement Speed
  • +Hipfire and Tac Stance Spread
  • +Aim Walking Speed
  • -Recoil Control
  • -Bullet Velocity & Range
  • -Gun Kick Control
  • -Aiming Idle Sway
XRK Edge BW-4 Handstop (Underbarrel)
  • +Aim Walking Speed
  • +Movement Speed
  • +Aim Down Sights Speed
  • +Sprint to Fire Speed
  • -Aim Walking Steadiness
  • -Hipfire and Tac Stance Spread
60 Round Mag (Magazine)
  • +Aim Down Sights Speed
  • +Sprint to Fire Speed
  • +Movement Speed
  • +Reload Quickness
FT Ironbar Stock (Stock)
  • +Aim Walking Speed
  • +Sprint Speed

This build turns the Bruen MK9 into an LMG with assault rifle handling. It isn’t ideal for long-range fights, but this build makes the Bruen far stronger for close-quarters combat. Unlike the previous build, we’ll be using the 7mw Canted Laser attachment to give this weapon canted aiming. Since this weapon has lackluster attachments for tac stance, the canted laser is your next best option.

For handling stats, we use the 60 Round Mag to cut our reload time in half, the FT Ironbar Stock to greatly improve our strafe speed, the Bruen 18” Para Barrel for additional ADS speed, and the XRX Edge BW-4 Handstop for additional handling. All of these attachments work together to create an LMG with 339ms ADS speed, a 181ms sprint-to-fire delay, and greatly improved strafe speed.

Loadout Recommendations

Perks
Vest Infantry
Gloves Assault Gloves
Boots Covert Sneakers
Gear Ghost
Equipment
Secondary Preference
Tactical Stim
Lethal Throwing Knife
Field Upgrade Preference

While this build doesn’t have a suppressor, its mobility stats are still subpar when compared to SMGs, so we’ll be building for stealth. The Infantry Vest will double your tactical sprint duration and grant three perk slots. Assault Gloves will let you jumpshot reliably while Covert Sneakers will muffle your footstep audio. Paired with Ghost hiding you from enemy radar, you should be able to catch most enemies by surprise.

Your equipment for this build is mostly down to preference. The Throwing Knife and Stims are always good options for aggressive players, but feel free to use something else to suit your playstyle.

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