Black Ops 7: Best MK.78 Loadout Turn the MK.78 into a high-mobility, mid-range powerhouse with this optimized LMG build

The MK.78 is the very first light machine gun you unlock in Call of Duty: Black Ops 7, available from the moment you load into multiplayer. With only two LMGs in the game, it may not grab players’ attention immediately — especially since LMGs are often known for slow movement, drawn-out reloads, and inconsistent damage profiles.

But don’t let the stereotypes fool you. With the right attachments, the MK.78 becomes a reliable and surprisingly fun LMG that holds its own on any map.

Below is the strongest MK.78 loadout for Black Ops 7 multiplayer.

🔥 Best MK.78 Loadout in Black Ops 7

Though the MK.78 may look ordinary at first glance, certain attachments drastically change how it performs. Using this build, you can transform it from a sluggish LMG into a flexible, mid-range laser that’s more mobile than you might expect.

Recommended MK.78 Loadout:

Optic: Lethal Tools Elo
Muzzle: Bowen Modulator 7.62
Barrel: 18.5" Titan Hybrid
Magazine: MFS Heatshield Belt (Prestige Attachment)
Rear Grip: Hades Looper-X Grip

Loadout Build Code: L01-5XH9E-FTS11-1

🧩 Why This MK.78 Loadout Works

The star of this build is the MFS Heatshield Belt, a Prestige magazine that completely removes the need to reload. Instead of traditional mags, the MK.78 uses an overheat meter that prevents you from shooting endlessly. As long as you manage your firing bursts and avoid overheating, you effectively have infinite ammo ready at all times.

The remaining attachments work together to enhance:

Mobility — making the MK.78 more responsive than typical LMGs
Accuracy — improving control for consistent mid-range gunfights
Damage Range — helping the weapon compete with ARs at distance

While mobility will never fully match SMGs or assault rifles, this setup makes the MK.78 competitive in most situations.

🏆 Final Thoughts

If you want an LMG that’s reliable, accurate, and surprisingly flexible, the MK.78 is a great early-game choice in Black Ops 7. Pair it with the Heatshield Belt and a mobility-focused build, and you’ll turn a basic LMG into a versatile beam capable of shredding across mid-range sightlines.