The Gremlin is one of the most aggressive SMGs introduced in Call of Duty: Black Ops 7 Season 5, built specifically to farm close-range kills. With the right attachments, you can turn the weapon into a laser that shreds at hip-fire while staying controllable across longer lanes.

Before putting the build together, make sure you have unlocked the Gremlin SMG in BO7 and Warzone.

Best Gremlin Attachments in BO7

To run the fastest handling Gremlin attachments in Black Ops 7 you must equip the Gunfighter wildcard. Here are the six attachments to slot onto your weapon:

  • Muzzle: Hawker Series 45 (Vertical Recoil Control)
  • Barrel: 9″ MFS Cestus (Melee Damage, Movement Speed, Melee Attack Speed, Sprint to Fire Speed)
  • Magazine: Procural Extended Mag (Magazine Ammo Capacity)
  • Rear Grip: Saber Grip (Hipfire Spread, Sprinting Hipfire Spread, Slide and Dive to Fire Speed)
  • Stock: Rhapsody Stock (Hipfire Spread – Standard, Slide, Dive, Jump)
  • Fire Mod: 9mm Parabell (Scorestreak Damage, Penetration Damage)

The Hawker Series 45 compensator offers a noticeable boost to vertical recoil control. Because the Gremlin fires quickly and kicks upward when you hold the trigger, this muzzle keeps your shots centered during longer bursts. The 9″ MFS Cestus barrel provides a small damage-range and stability bump while keeping mobility high, and the Procural Extended Mag increases ammo capacity to support the gun's high fire rate.

Additionally, the Saber Grip boosts handling, cuts down ADS time, and assists with weapon control when snapping to targets. The Rhapsody Stock gives smoother strafe speed, and the 9mm Parabell rounds round out the build by adding stopping power and improving your time-to-kill.

Best Gremlin Class Setup and Perks

A top-tier weapon build requires the right supporting gear to match. Here is the complete Black Ops 7 Gremlin SMG class setup:

  • Secondary: Velox 5.7
  • Melee: Personal choice
  • Wildcard: Gunfighter
  • Field Upgrade: Mute Field
  • Tactical: Stim Shot
  • Lethal: Semtex
  • Perk 1: Gung Ho
  • Perk 2: Assassin
  • Perk 3: Dexterity
  • Combat Specialty: Enforcer

The Velox 5.7 secondary covers you when you get caught reloading. Mute Field hides footstep audio and equipment noise to help you flank or retake objectives. Stim Shot keeps you in fights by instantly refilling health, and Semtex clears out hardpoints or chokepoints effectively.

For perks, Gung Ho lets you sprint and fire or shoot while sliding. Assassin rewards aggressive pushes by marking high-value targets and hunting down streaking enemies. Dexterity grants faster weapon handling and reloads so you stay ready without slowing down. Combined, these perks unlock the Enforcer Combat Specialty, giving you a movement and health regeneration buff after every kill.