One of the newer additions to both Warzone Mobile and Modern Warfare III, the HRM-9 is proving to be a flexible SMG that can work well especially as a frontline support backup piece.

What are some of the best attachments for this fast-firing and easy-to-handle SMG? We tested it out during both the Limited Release and the current play and found this build to work!

UNDERBARREL: Bruen Tactical Vertical Grip (unlocked by leveling the MCW to Level 9)

This grip helps capitalize on the potential of the HRM-9 to become a hip fire beast by stabilizing the weapon’s gun kick and also reducing a bit of the hipfire spread.

MUZZLE: Sonic Suppressor S (unlocked by leveling the WSP-9 at Level 24)

The SMG version of the Sonic Suppressor functions very much like its bigger brothers by greatly increasing bullet velocity and adding a small damage range increase, allowing you to engage enemies at better distances. 

MAGAZINE: 50 Round Drum (unlocked at Level 18)

The HRM-9’s fire rate can easily shred opponents, especially at close range. Albeit being slower than the RAM-9 overall, the HRM-9’s fast fire rate will leave you hungry for more ammunition to bring down opponents in intense, close quarter gunfights. Use the 50-round drum mag attachment to make the most out of your HRM-9’s flexible potential!

LASER: VLK LZR 7mw (unlocked by leveling the STB 556 to level 5)

The VLK LZR 7mw ensures that your RAM-9 can have a faster ADS and sprint to fire speed while also providing much-needed aiming stability.

AMMUNITION: 9mm High Grain Rounds (unlocked by leveling up the AMR9 to Level 29)

9mm High Grain Rounds can be used to further increase the potency of your HRM-9 by adding a range and damage buff per shot, at the cost of some recoil control which the Bruen Tactical Vertical Grip can mitigate. 

 

OPTIONAL REPLACEMENTS:

OPTIC: Nydar Model 2023 or Slate Reflector [to replace Laser] 

In place of a laser, the Nydar Model 2023 or Slate Reflector can help HRM-9 users focusing on ADS to have a much clearer sight picture and lesser visual recoil. This can help for faster and more precise target acquisition, especially in those crucial final zones.

BARREL: Princeps Long Barrel [to replace 9mm HG rounds] (unlocked at level 9)

This longer barrel essentially makes your HRM-9 a pistol-caliber automatic carbine capable of ADS or hip fire engagements at close-to-mid range.

 

These attachments can help you utilize a flexible, easy-to-use SMG which can definitely help you clean house!