- 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.
OFFICIAL BALANCE HISTORY · 5 UPDATES
From each season's official patch notes. Damage-range changes are shown as direction only; other changes as written.
- Firing ADS Movement Speed penalty reduced from 30% to 25%.
- Maximum Damage Range: less damage
- Medium Damage Range: less damage
Attachments tuned:MFS Heatshield Belt Fed
Source: official patch notes ↗Attachments tuned:Shock Shield Stock ×2
Source: official patch notes ↗Attachments tuned:17" Bowen Moon Barrel18.5" Titan Hybrid BarrelQuickstep ForegripCharon Light StockSwiftGuard Stock
Source: official patch notes ↗Attachments tuned:Bowen Modulator 7.6220" Mach-78 Barrel18.5" Titan Hybrid Barrel ×2Gravepack Extended Belt ×2Payload Belt Extension ×4LTI Precision GripCharon Light Stock ×23mW Motion Strike Laser
Source: official patch notes ↗