- Firing ADS Movement Speed penalty reduced from 30% to 25%.
Weapons / LMG
MK.78
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
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
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
Latest balance changes
Full history (5)- 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
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.
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…
20" Mach-78 BarrelBarrelUnlocked at Weapon Level 3.
Bowen Modulator 7.62MuzzleUnlocked at Weapon Level 16.
LTI Precision GripRear GripUnlocked at Weapon Level 32.
Enhance-32 HandstopUnderbarrelUnlocked at Weapon Level 2.
7.62 NATO OverpressuredFire ModsUnlocked at Weapon Level 4.
Exact image unavailable — Magazine
SPECIAL CODE category presentation — not the exact attachment geometry.
MFS Heatshield Belt FedMagazine
Prestige
Prestige
Official prestige attachment.
MFS Heatshield Belt FedMagazineReach maximum Weapon Level and Prestige the weapon.
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).
Greaves A-762MuzzleUnlocked at Weapon Level 6.
Enhance-32 HandstopUnderbarrelUnlocked at Weapon Level 2.
20" Mach-78 BarrelBarrelUnlocked at Weapon Level 3.
Trailblaze GripRear GripUnlocked at Weapon Level 10.
Swift Feed Fast BeltMagazineUnlocked at Weapon Level 11.
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.
MFS Heatshield Belt FedMagazineReach maximum Weapon Level and Prestige the weapon.
Exact image unavailable — Magazine
SPECIAL CODE category presentation — not the exact attachment geometry.
MFS Heatshield Belt FedMagazine
MK.78 official prestige magazine
Launch documented