Weapons / LMG

MK.78

Compare Ready builds

1 · PICK YOUR STYLE

2 · SET YOUR WEAPON LEVEL

All-rounder at LV 50: 5 of 5 final

Level

LV 50

150

Unlocked 49/49

Complete

SC // WEAPON INTEL

GUNSMITH · LV 50

LOADOUT BUILDER

Your build · 5/5

S100/100 · Excellent100% match with our All-rounder build

Complete atLV 11

MuzzleGreaves A-762LV 6

Barrel20" Mach-78 BarrelLV 3

UnderbarrelEnhance-32 HandstopLV 2

Rear GripTrailblaze GripLV 10

MagazineSwift Feed Fast BeltLV 11

Laser

5 of 5 unlocked at LV 50

Unlock levels: under review

LV 72mw Adaptive Tactical LaserTactical laser: faster aiming in tactical stance (visible laser). (Tactical Laser)Unlocked

LV 14Convergence Box LaserSteady laser: steadier aim while aiming down sights. (Steady Aim Laser)Unlocked

LV 335mW Lockstep LaserSteady laser: steadier aim while aiming down sights. (Strelok Laser)Unlocked

LV 411mW Instinct Laser ArrayHandling laser: faster aiming and sprint-to-fire (visible laser). (Handling Laser)Unlocked

LV 493mW Motion Strike LaserSteady laser: steadier aim while aiming down sights. (Stable Range Laser)Unlocked

PERFORMANCE

Damage range

Official · verified

Latest balance changes

Full history (5)

TuningSeason 0331 Mar 2026

Firing ADS Movement Speed penalty reduced from 30% to 25%.

Source: official patch notes ↗

NerfSeason 0213 Feb 2026

Maximum Damage Range: less damage
Medium Damage Range: less damage

Attachments tuned:MFS Heatshield Belt Fed

Source: official patch notes ↗

Alternatives in this class

All weapons

XM3254 ready builds

Mammoth1 ready build

Sokol 5451 ready build

MK.78 FAQ

What is the best MK.78 build?

We have ready builds for the MK.78: mid range, prestige, all-rounder, long range. Pick a style and your weapon level in the lab above and we equip the right parts for that level, with stand-ins until the parts unlock.

What is the MK.78 max level?

The MK.78 maxes out at weapon level 50. After that you can enter weapon prestige and unlock its prestige attachment.

How many attachments does the MK.78 have?

We list 55 compatible attachments for the MK.78 across 9 slots, each with its unlock level and what it does.

What is the MK.78 prestige attachment?

The prestige attachment is the MFS Heatshield Belt Fed. It unlocks after you reach max level and enter weapon prestige.

Was the MK.78 changed recently?

The last official change to the MK.78 was in Season 03 (2026-03-31). The patch notes have changed it 5 times since launch — all listed in the History tab.

What are the alternatives to the MK.78?

In the same class: XM325, Mammoth, Sokol 545. Each has its own page with level-by-level builds.

Overview Builds Attachments Progression More

58 LIVE weapons does not mean every combat stat is complete. Documented verified coverage: scalar damage 29/58, model-aware damage 33/58, legacy scalar RPM/TTK 4/58. Unverified values are labeled and never shown as zero.

COMBAT SNAPSHOT

Combat data

Black Ops 7 Multiplayer numbers when documented — never silently replaced by Warzone. · Supported

HEAD

Not verified

BODY

31 · 4 STK

RPM

Not verified

TTK (close)

Not verified

Magazine

RANGE

0–40.6 m

USEFUL KILL COMBOS4B KILL1H+3B KILL2H+2B KILL

RANGE	DMG	STK	TTK
0–40.6m	31	4	—
40.7–61m	24	5	—
61m+	23	5	—

Build for my level

Enter your MK.78 level and pick a playstyle to get a useful build.

Weapon level

Playstyle

Close = short fights · Balanced = general · Long = longer range

Best available now

Exact image unavailable — Optic

SPECIAL CODE category presentation — not the exact attachment geometry.

Optic

Greaves AccuSpot 3x

Optic

AVAILABLE NOW

Optic: a sight for clearer aiming.

Exact image unavailable — Underbarrel

SPECIAL CODE category presentation — not the exact attachment geometry.

Underbarrel

Enhance-32 Handstop

Underbarrel

AVAILABLE NOW

Steady foregrip: steadier aim and less sway.

Exact image unavailable — Barrel

SPECIAL CODE category presentation — not the exact attachment geometry.

Barrel

20" Mach-78 Barrel

Barrel

AVAILABLE NOW

Velocity barrel: faster bullets for long fights.

Exact image unavailable — Muzzle

SPECIAL CODE category presentation — not the exact attachment geometry.

Muzzle

Bowen Modulator 7.62

Muzzle

AVAILABLE NOW

Muzzle brake: less gun kick and vertical recoil.

Exact image unavailable — Magazine

SPECIAL CODE category presentation — not the exact attachment geometry.

Magazine

Swift Feed Fast Belt

Magazine

AVAILABLE NOW

Fast mag: faster reload.

Next useful unlock

Level 26 → PrismaTech Turbo 4x

Max-level build

Exact image unavailable — Barrel

SPECIAL CODE category presentation — not the exact attachment geometry.

Barrel

20" Mach-78 Barrel

Barrel

AVAILABLE NOW

Velocity barrel: faster bullets for long fights.

Exact image unavailable — Underbarrel

SPECIAL CODE category presentation — not the exact attachment geometry.

Underbarrel

Enhance-32 Handstop

Underbarrel

AVAILABLE NOW

Steady foregrip: steadier aim and less sway.

Exact image unavailable — Muzzle

SPECIAL CODE category presentation — not the exact attachment geometry.

Muzzle

Bowen Modulator 7.62

Muzzle

AVAILABLE NOW

Muzzle brake: less gun kick and vertical recoil.

Exact image unavailable — Rear Grip

SPECIAL CODE category presentation — not the exact attachment geometry.

Rear Grip

LTI Precision Grip

Rear Grip

Needs Weapon Level

Stabilization grip: less horizontal recoil, slightly slower aiming.

Exact image unavailable — Fire Mods

SPECIAL CODE category presentation — not the exact attachment geometry.

Fire Mods

7.62 NATO Overpressured

Fire Mods

AVAILABLE NOW

High-velocity ammo: faster bullets and more range.

Prestige build

Exact image unavailable — Magazine

SPECIAL CODE category presentation — not the exact attachment geometry.

Magazine

MFS Heatshield Belt Fed

Magazine

Needs Weapon Prestige

Takes longer to overheat and improves mobility in addition to removing movement penalties when…

BUILDS

Best builds

All builds

Exact image unavailable — Barrel

SPECIAL CODE category presentation — not the exact attachment geometry.

20" Mach-78 BarrelBarrel

Exact image unavailable — Muzzle

SPECIAL CODE category presentation — not the exact attachment geometry.

Bowen Modulator 7.62Muzzle

Exact image unavailable — Rear Grip

SPECIAL CODE category presentation — not the exact attachment geometry.

LTI Precision GripRear Grip

Exact image unavailable — Underbarrel

SPECIAL CODE category presentation — not the exact attachment geometry.

Enhance-32 HandstopUnderbarrel

Exact image unavailable — Fire Mods

SPECIAL CODE category presentation — not the exact attachment geometry.

7.62 NATO OverpressuredFire Mods

Balanced

MK.78 Mid Range

Built by SPECIAL CODE from attachment archetypes (close: handling/mobility/hip-fire; mid: range…

Exact image unavailable — Magazine

SPECIAL CODE category presentation — not the exact attachment geometry.

MFS Heatshield Belt FedMagazine

Prestige

Official prestige attachment.

Exact image unavailable — Muzzle

SPECIAL CODE category presentation — not the exact attachment geometry.

Greaves A-762Muzzle

Exact image unavailable — Underbarrel

SPECIAL CODE category presentation — not the exact attachment geometry.

Enhance-32 HandstopUnderbarrel

Exact image unavailable — Barrel

SPECIAL CODE category presentation — not the exact attachment geometry.

20" Mach-78 BarrelBarrel

Exact image unavailable — Rear Grip

SPECIAL CODE category presentation — not the exact attachment geometry.

Trailblaze GripRear Grip

Exact image unavailable — Magazine

SPECIAL CODE category presentation — not the exact attachment geometry.

Swift Feed Fast BeltMagazine

ALL_ROUNDER

Recommended control path

Editor path from web-supported unlock track (early slot representatives).

Exact image unavailable — Magazine

SPECIAL CODE category presentation — not the exact attachment geometry.

MFS Heatshield Belt FedMagazine

Long

MK.78 prestige launch path

Editor recommended because this is the officially named Prestige Attachment for MK.78.

UNLOCK TRACK

Weapon attachment progression

Max Level 50

View level5

Enhance-32 Handstop

Underbarrel

AVAILABLE

Exact image unavailable — Underbarrel

SPECIAL CODE category presentation — not the exact attachment geometry.

Enhance-32 HandstopUnderbarrel

20" Mach-78 Barrel

Barrel

AVAILABLE

Exact image unavailable — Barrel

SPECIAL CODE category presentation — not the exact attachment geometry.

20" Mach-78 BarrelBarrel

7.62 NATO Overpressured

Fire Mods

AVAILABLE

Exact image unavailable — Fire Mods

SPECIAL CODE category presentation — not the exact attachment geometry.

7.62 NATO OverpressuredFire Mods

VAS LED

Optic

AVAILABLE

Exact image unavailable — Optic

SPECIAL CODE category presentation — not the exact attachment geometry.

VAS LEDOptic

Greaves A-762

Muzzle

Exact image unavailable — Muzzle

SPECIAL CODE category presentation — not the exact attachment geometry.

Greaves A-762Muzzle

2mw Adaptive Tactical Laser

Laser

LOCKED

Exact image unavailable — Laser

SPECIAL CODE category presentation — not the exact attachment geometry.

2mw Adaptive Tactical LaserLaser

Parallel Foregrip

Underbarrel

LOCKED

Exact image unavailable — Underbarrel

SPECIAL CODE category presentation — not the exact attachment geometry.

Parallel ForegripUnderbarrel

LTI Reflex

Optic

LOCKED

Exact image unavailable — Optic

SPECIAL CODE category presentation — not the exact attachment geometry.

LTI ReflexOptic

Trailblaze Grip

Rear Grip

LOCKED

Exact image unavailable — Rear Grip

SPECIAL CODE category presentation — not the exact attachment geometry.

Trailblaze GripRear Grip

Swift Feed Fast Belt

Magazine

LOCKED

Exact image unavailable — Magazine

SPECIAL CODE category presentation — not the exact attachment geometry.

Swift Feed Fast BeltMagazine

Shock Shield Stock

Stock

LOCKED

Exact image unavailable — Stock

SPECIAL CODE category presentation — not the exact attachment geometry.

Shock Shield StockStock

EMT3 Holo Mk.2

Optic

LOCKED

Exact image unavailable — Optic

SPECIAL CODE category presentation — not the exact attachment geometry.

EMT3 Holo Mk.2Optic

Convergence Box Laser

Laser

LOCKED

Exact image unavailable — Laser

SPECIAL CODE category presentation — not the exact attachment geometry.

Convergence Box LaserLaser

17" Bowen Moon Barrel

Barrel

LOCKED

Exact image unavailable — Barrel

SPECIAL CODE category presentation — not the exact attachment geometry.

17" Bowen Moon BarrelBarrel

Bowen Modulator 7.62

Muzzle

LOCKED

Exact image unavailable — Muzzle

SPECIAL CODE category presentation — not the exact attachment geometry.

Bowen Modulator 7.62Muzzle

Kepler T-Range Holo

Optic

LOCKED

Exact image unavailable — Optic

SPECIAL CODE category presentation — not the exact attachment geometry.

Kepler T-Range HoloOptic

Bolt Carrier Group

Fire Mods

LOCKED

Exact image unavailable — Fire Mods

SPECIAL CODE category presentation — not the exact attachment geometry.

Bolt Carrier GroupFire Mods

Ironhold Angled Grip

Underbarrel

LOCKED

Exact image unavailable — Underbarrel

SPECIAL CODE category presentation — not the exact attachment geometry.

Ironhold Angled GripUnderbarrel

Charon Light Stock

Stock

LOCKED

Exact image unavailable — Stock

SPECIAL CODE category presentation — not the exact attachment geometry.

Charon Light StockStock

15" Skylance Barrel

Barrel

LOCKED

Exact image unavailable — Barrel

SPECIAL CODE category presentation — not the exact attachment geometry.

15" Skylance BarrelBarrel

Greaves AccuSpot 3x

Optic

LOCKED

Exact image unavailable — Optic

SPECIAL CODE category presentation — not the exact attachment geometry.

Greaves AccuSpot 3xOptic

Bowen Thrust Grip

Rear Grip

LOCKED

Exact image unavailable — Rear Grip

SPECIAL CODE category presentation — not the exact attachment geometry.

Bowen Thrust GripRear Grip

Bowen Sentry Foregrip

Underbarrel

LOCKED

Exact image unavailable — Underbarrel

SPECIAL CODE category presentation — not the exact attachment geometry.

Bowen Sentry ForegripUnderbarrel

Gravepack Extended Belt

Magazine

LOCKED

Exact image unavailable — Magazine

SPECIAL CODE category presentation — not the exact attachment geometry.

Gravepack Extended BeltMagazine

PrismaTech Turbo 4x

Optic

LOCKED

Exact image unavailable — Optic

SPECIAL CODE category presentation — not the exact attachment geometry.

PrismaTech Turbo 4xOptic

18.5" Titan Hybrid Barrel

Barrel

LOCKED

Exact image unavailable — Barrel

SPECIAL CODE category presentation — not the exact attachment geometry.

18.5" Titan Hybrid BarrelBarrel

Scatter Skeletal Stock

Stock

LOCKED

Exact image unavailable — Stock

SPECIAL CODE category presentation — not the exact attachment geometry.

Scatter Skeletal StockStock

RL-7.62 Compensator

Muzzle

LOCKED

Exact image unavailable — Muzzle

SPECIAL CODE category presentation — not the exact attachment geometry.

RL-7.62 CompensatorMuzzle

Quickstep Foregrip

Underbarrel

LOCKED

Exact image unavailable — Underbarrel

SPECIAL CODE category presentation — not the exact attachment geometry.

Quickstep ForegripUnderbarrel

Greaves Ultra Zoom

Optic

LOCKED

Exact image unavailable — Optic

SPECIAL CODE category presentation — not the exact attachment geometry.

Greaves Ultra ZoomOptic

LTI Precision Grip

Rear Grip

LOCKED

Exact image unavailable — Rear Grip

SPECIAL CODE category presentation — not the exact attachment geometry.

LTI Precision GripRear Grip

5mW Lockstep Laser

Laser

LOCKED

Exact image unavailable — Laser

SPECIAL CODE category presentation — not the exact attachment geometry.

5mW Lockstep LaserLaser

Accelerated Recoil System

Fire Mods

LOCKED

Exact image unavailable — Fire Mods

SPECIAL CODE category presentation — not the exact attachment geometry.

Accelerated Recoil SystemFire Mods

Monolithic Suppressor

Muzzle

LOCKED

Exact image unavailable — Muzzle

SPECIAL CODE category presentation — not the exact attachment geometry.

Monolithic SuppressorMuzzle

VAS Duo Hybrid Sight

Optic

LOCKED

Exact image unavailable — Optic

SPECIAL CODE category presentation — not the exact attachment geometry.

VAS Duo Hybrid SightOptic

22" Impulse HB-762 Barrel

Barrel

LOCKED

Exact image unavailable — Barrel

SPECIAL CODE category presentation — not the exact attachment geometry.

22" Impulse HB-762 BarrelBarrel

Titan-R 7.62 Compensator

Muzzle

LOCKED

Exact image unavailable — Muzzle

SPECIAL CODE category presentation — not the exact attachment geometry.

Titan-R 7.62 CompensatorMuzzle

Bowen Light Stock

Stock

LOCKED

Exact image unavailable — Stock

SPECIAL CODE category presentation — not the exact attachment geometry.

Bowen Light StockStock

Fleet-G2 Grip

Rear Grip

LOCKED

Exact image unavailable — Rear Grip

SPECIAL CODE category presentation — not the exact attachment geometry.

Fleet-G2 GripRear Grip

LTI Target Finder v.2

Optic

LOCKED

Exact image unavailable — Optic

SPECIAL CODE category presentation — not the exact attachment geometry.

LTI Target Finder v.2Optic

1mW Instinct Laser Array

Laser

LOCKED

Exact image unavailable — Laser

SPECIAL CODE category presentation — not the exact attachment geometry.

1mW Instinct Laser ArrayLaser

Payload Belt Extension

Magazine

LOCKED

Exact image unavailable — Magazine

SPECIAL CODE category presentation — not the exact attachment geometry.

Payload Belt ExtensionMagazine

7.62 NATO FMJ

Fire Mods

LOCKED

Exact image unavailable — Fire Mods

SPECIAL CODE category presentation — not the exact attachment geometry.

7.62 NATO FMJFire Mods

Circuit-Z Rangefinder

Optic

LOCKED

Exact image unavailable — Optic

SPECIAL CODE category presentation — not the exact attachment geometry.

Circuit-Z RangefinderOptic

EAM Steady-90 Grip

Underbarrel

LOCKED

Exact image unavailable — Underbarrel

SPECIAL CODE category presentation — not the exact attachment geometry.

EAM Steady-90 GripUnderbarrel

SwiftGuard Stock

Stock

LOCKED

Exact image unavailable — Stock

SPECIAL CODE category presentation — not the exact attachment geometry.

SwiftGuard StockStock

Bowen X-25 IR

Optic

LOCKED

Exact image unavailable — Optic

SPECIAL CODE category presentation — not the exact attachment geometry.

Bowen X-25 IROptic

3mW Motion Strike Laser

Laser

LOCKED

Exact image unavailable — Laser

SPECIAL CODE category presentation — not the exact attachment geometry.

3mW Motion Strike LaserLaser

Hades Looper-X Grip

Rear Grip

LOCKED

Exact image unavailable — Rear Grip

SPECIAL CODE category presentation — not the exact attachment geometry.

Hades Looper-X GripRear Grip

Lv50 · MAX

MAX LEVEL → PRESTIGE

After Max Level you enter Weapon Prestige. Progression attachments relock except Optics.

Prestige attachment: MFS Heatshield Belt Fed

WEAPON PRESTIGE

What happens after Max Level?

Entering Weapon Prestige returns Weapon Level to 1. Progression attachments relock. Optics stay unlocked. Camos and customization stay.

MAX LEVEL 50
Current Weapon Level unknown
Manual tracking only.
Next useful attachment
Shown from a verified Weapon-Level unlock.
Max Weapon Level 50
Only shown when an official weapon page states Max Weapon Level.
Weapon Prestige 1
Prestige 1: weapon-specific Prestige Attachment, first Permanent Attachment Unlock, Prestige Camo, Prestige Build.
Weapon Prestige 2
Prestige 2: second Permanent Attachment Unlock, Prestige 2 Camo, and the weapon-specific reward where officially named.
Prestige Master
Prestige Master does not reset again. Progression attachments stay permanently unlocked. The cap expands to 250 with Master camos at supported milestone levels.
Prestige Max
Prestige Max is the final named milestone where a Prestige Max camo is officially listed.
Prestige attachment: MFS Heatshield Belt Fed

Attachments Stats Camos Challenges History