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The HRM-9 submachine gun is a part of the content drop for Season 1 Reloaded in Call of Duty: Warzone. If you went through the unlock process for the HRM-9, then you can start equipping attachments for the SMG. However, you’ll have to get to max level to use the strongest loadout for the HRM-9 in Warzone.

To see the best loadout for the HRM-9 in Warzone, keep reading my guide below.

Best HRM-9 loadout in Warzone

  • Muzzle: Purifier Muzzle Brake S
  • Barrel: Princeps Long Barrel
  • Stock: Folding Stock
  • Underbarrel: Bruen Heavy Support Grip
  • Magazine: 50 Round Drum
Screenshot via Upcomer

Since the HRM-9 has such a high fire rate, it naturally comes with quite a lot of recoil. Luckily, we can fix that with a few key attachments. Namely, the Purifier Muzzle Brake S and the Bruen Heavy Support Grip drastically reduce your recoil when firing the HRM-9. The Folding Stock also helps with recoil as well as stability, making your weapon shoot as straight as possible at longer ranges.

Related: Warzone Season 1 Reloaded patch notes

Moving on, the Princeps Long Barrel massively boosts your bullet velocity and damage range while the 50 Round Drum makes sure you have access to the most bullets possible in each magazine.

Best Class Setup for the HRM-9 in Warzone

Finally, with your attachments equipped, you can set up the rest of your class with the best primary weapon, equipment, and perks.

Primary Weapon

  • MTZ Interceptor, RAM-7, Pulemyot 762, BAS-B, or anything comparable


  • Perk 1: Double Time
  • Perk 2: Sleight of Hand
  • Perk 3: Tempered
  • Perk 4: Resolute


  • Lethal: Throwing Knife
  • Tactical: Smoke Grenade

That does it for the best HRM-9 loadout in Warzone. Time will tell how the new SMG fits into the meta, but for now, it should at least be an enjoyable close range option.