- 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 — Fire Mods
SPECIAL CODE category presentation — not the exact attachment geometry.
Accelerated Recoil SystemFire ModsLVL 34
Accelerated Recoil System
Fire Mods
Unlocked at Weapon Level 34.
Recoil springs: less recoil.
View detailsExact image unavailable — Fire Mods
SPECIAL CODE category presentation — not the exact attachment geometry.
Bolt Carrier GroupFire ModsLVL 18
Bolt Carrier Group
Fire Mods
Unlocked at Weapon Level 18.
Rapid fire: faster fire rate, less range.
View detailsExact image unavailable — Fire Mods
SPECIAL CODE category presentation — not the exact attachment geometry.
7.62 NATO FMJFire ModsLVL 43
7.62 NATO FMJ
Fire Mods
Unlocked at Weapon Level 43.
FMJ rounds: bullet velocity and range.
View detailsExact image unavailable — Fire Mods
SPECIAL CODE category presentation — not the exact attachment geometry.
7.62 NATO OverpressuredFire ModsLVL 4
7.62 NATO Overpressured
Fire Mods
Unlocked at Weapon Level 4.
High-velocity ammo: faster bullets and more range.
View details
Exact image unavailable — Laser
SPECIAL CODE category presentation — not the exact attachment geometry.
3mW Motion Strike LaserLaserLVL 49
3mW Motion Strike Laser
Laser
Unlocked at Weapon Level 49.
Steady laser: steadier aim while aiming down sights.
View detailsExact image unavailable — Laser
SPECIAL CODE category presentation — not the exact attachment geometry.
5mW Lockstep LaserLaserLVL 33
5mW Lockstep Laser
Laser
Unlocked at Weapon Level 33.
Steady laser: steadier aim while aiming down sights.
View detailsExact image unavailable — Laser
SPECIAL CODE category presentation — not the exact attachment geometry.
2mw Adaptive Tactical LaserLaserLVL 7
2mw Adaptive Tactical Laser
Laser
Unlocked at Weapon Level 7.
Tactical laser: faster aiming in tactical stance (visible laser).
View detailsExact image unavailable — Laser
SPECIAL CODE category presentation — not the exact attachment geometry.
1mW Instinct Laser ArrayLaserLVL 41
1mW Instinct Laser Array
Laser
Unlocked at Weapon Level 41.
Handling laser: faster aiming and sprint-to-fire (visible laser).
View details
Exact image unavailable — Stock
SPECIAL CODE category presentation — not the exact attachment geometry.
Charon Light StockStockLVL 20
Charon Light Stock
Stock
Unlocked at Weapon Level 20.
Mobility stock: faster movement and sprint.
View detailsExact image unavailable — Stock
SPECIAL CODE category presentation — not the exact attachment geometry.
Bowen Light StockStockLVL 38
Bowen Light Stock
Stock
Unlocked at Weapon Level 38.
Aim-walk stock: faster movement while aiming.
View detailsExact image unavailable — Stock
SPECIAL CODE category presentation — not the exact attachment geometry.
SwiftGuard StockStockLVL 47
SwiftGuard Stock
Stock
Unlocked at Weapon Level 47.
Flinch stock: less aim flinch when you get hit.
View detailsExact image unavailable — Stock
SPECIAL CODE category presentation — not the exact attachment geometry.
Shock Shield StockStockLVL 12
Shock Shield Stock
Stock
Unlocked at Weapon Level 12.
Control stock: less recoil, slower handling.
View detailsExact image unavailable — Stock
SPECIAL CODE category presentation — not the exact attachment geometry.
Scatter Skeletal StockStockLVL 28
Scatter Skeletal Stock
Stock
Unlocked at Weapon Level 28.
Tactical stock: better hip-fire and tactical-stance accuracy.
View details
Exact image unavailable — Rear Grip
SPECIAL CODE category presentation — not the exact attachment geometry.
Bowen Thrust GripRear GripLVL 23
Bowen Thrust Grip
Rear Grip
Unlocked at Weapon Level 23.
Sprint-to-fire grip: shoot sooner after sprinting.
View detailsExact image unavailable — Rear Grip
SPECIAL CODE category presentation — not the exact attachment geometry.
Fleet-G2 GripRear GripLVL 39
Exact image unavailable — Rear Grip
SPECIAL CODE category presentation — not the exact attachment geometry.
Hades Looper-X GripRear GripLVL 50
Hades Looper-X Grip
Rear Grip
Unlocked at Weapon Level 50.
Quickdraw grip: faster aim-down-sights.
View detailsExact image unavailable — Rear Grip
SPECIAL CODE category presentation — not the exact attachment geometry.
LTI Precision GripRear GripLVL 32
LTI Precision Grip
Rear Grip
Unlocked at Weapon Level 32.
Stabilization grip: less horizontal recoil, slightly slower aiming.
View detailsExact image unavailable — Rear Grip
SPECIAL CODE category presentation — not the exact attachment geometry.
Trailblaze GripRear GripLVL 10
Trailblaze Grip
Rear Grip
Unlocked at Weapon Level 10.
Quickdraw grip: faster aim-down-sights.
View details
Exact image unavailable — Magazine
SPECIAL CODE category presentation — not the exact attachment geometry.
Swift Feed Fast BeltMagazineLVL 11
Exact image unavailable — Magazine
SPECIAL CODE category presentation — not the exact attachment geometry.
Gravepack Extended BeltMagazineLVL 25
Gravepack Extended Belt
Magazine
Unlocked at Weapon Level 25.
Extended mag: more ammo per magazine, slower handling.
View detailsExact image unavailable — Magazine
SPECIAL CODE category presentation — not the exact attachment geometry.
Payload Belt ExtensionMagazineLVL 42
Payload Belt Extension
Magazine
Unlocked at Weapon Level 42.
Extended mag: more ammo per magazine, slower handling.
View details
Exact image unavailable — Underbarrel
SPECIAL CODE category presentation — not the exact attachment geometry.
Parallel ForegripUnderbarrelLVL 8
Parallel Foregrip
Underbarrel
Unlocked at Weapon Level 8.
No verified effect summary is published for this attachment.
View detailsExact image unavailable — Underbarrel
SPECIAL CODE category presentation — not the exact attachment geometry.
Bowen Sentry ForegripUnderbarrelLVL 24
Bowen Sentry Foregrip
Underbarrel
Unlocked at Weapon Level 24.
Recoil foregrip: less recoil.
View detailsExact image unavailable — Underbarrel
SPECIAL CODE category presentation — not the exact attachment geometry.
Enhance-32 HandstopUnderbarrelLVL 2
Enhance-32 Handstop
Underbarrel
Unlocked at Weapon Level 2.
Steady foregrip: steadier aim and less sway.
View detailsExact image unavailable — Underbarrel
SPECIAL CODE category presentation — not the exact attachment geometry.
Quickstep ForegripUnderbarrelLVL 30
Quickstep Foregrip
Underbarrel
Unlocked at Weapon Level 30.
Mobility foregrip: faster movement.
View detailsExact image unavailable — Underbarrel
SPECIAL CODE category presentation — not the exact attachment geometry.
Ironhold Angled GripUnderbarrelLVL 19
Ironhold Angled Grip
Underbarrel
Unlocked at Weapon Level 19.
Steady foregrip: steadier aim and less sway.
View details
SPECIAL CODE
VAS Convergence ForegripOfficial referenceUnderbarrel
VAS Convergence Foregrip
Underbarrel
Unlocked from the Season 3 Battle Pass.
No verified effect summary is published for this attachment.
View detailsExact image unavailable — Underbarrel
SPECIAL CODE category presentation — not the exact attachment geometry.
EAM Steady-90 GripUnderbarrelLVL 46
EAM Steady-90 Grip
Underbarrel
Unlocked at Weapon Level 46.
Mobile recoil foregrip: faster movement with some recoil control.
View detailsExact image unavailable — Barrel
SPECIAL CODE category presentation — not the exact attachment geometry.
15" Skylance BarrelBarrelLVL 21
15" Skylance Barrel
Barrel
Unlocked at Weapon Level 21.
Short barrel: faster aiming and movement, shorter damage range.
View detailsExact image unavailable — Barrel
SPECIAL CODE category presentation — not the exact attachment geometry.
20" Mach-78 BarrelBarrelLVL 3
20" Mach-78 Barrel
Barrel
Unlocked at Weapon Level 3.
Velocity barrel: faster bullets for long fights.
View detailsExact image unavailable — Barrel
SPECIAL CODE category presentation — not the exact attachment geometry.
18.5" Titan Hybrid BarrelBarrelLVL 27
18.5" Titan Hybrid Barrel
Barrel
Unlocked at Weapon Level 27.
Hybrid barrel: faster bullets and more range, slightly slower aiming.
View detailsExact image unavailable — Barrel
SPECIAL CODE category presentation — not the exact attachment geometry.
22" Impulse HB-762 BarrelBarrelLVL 36
22" Impulse HB-762 Barrel
Barrel
Unlocked at Weapon Level 36.
Damage barrel: more damage per hit, more recoil.
View detailsExact image unavailable — Barrel
SPECIAL CODE category presentation — not the exact attachment geometry.
17" Bowen Moon BarrelBarrelLVL 15
17" Bowen Moon Barrel
Barrel
Unlocked at Weapon Level 15.
Long barrel: longer damage range, slower aiming.
View details
SPECIAL CODE
LTI Stentorian BrakeOfficial referenceMuzzle
LTI Stentorian Brake
Muzzle
Unlocked from the Season 4 Battle Pass.
No verified effect summary is published for this attachment.
View details
Exact image unavailable — Muzzle
SPECIAL CODE category presentation — not the exact attachment geometry.
Monolithic SuppressorMuzzleLVL 35
Monolithic Suppressor
Muzzle
Unlocked at Weapon Level 35.
Firepower suppressor: off the minimap, faster bullets and more range, slower aiming.
View detailsExact image unavailable — Muzzle
SPECIAL CODE category presentation — not the exact attachment geometry.
Titan-R 7.62 CompensatorMuzzleLVL 37
Titan-R 7.62 Compensator
Muzzle
Unlocked at Weapon Level 37.
Mobility muzzle: better hip-fire and movement speed.
View details
SPECIAL CODE
Redwell Shade-X SuppressorOfficial referenceMuzzle
Redwell Shade-X Suppressor
Muzzle
Unlocked via Weekly Challenge Reward.
Recoil suppressor: off the minimap with less recoil.
View detailsExact image unavailable — Muzzle
SPECIAL CODE category presentation — not the exact attachment geometry.
Bowen Modulator 7.62MuzzleLVL 16
Bowen Modulator 7.62
Muzzle
Unlocked at Weapon Level 16.
Muzzle brake: less gun kick and vertical recoil.
View detailsExact image unavailable — Muzzle
SPECIAL CODE category presentation — not the exact attachment geometry.
RL-7.62 CompensatorMuzzleLVL 29
Exact image unavailable — Muzzle
SPECIAL CODE category presentation — not the exact attachment geometry.
Greaves A-762MuzzleLVL 6
Greaves A-762
Muzzle
Unlocked at Weapon Level 6.
Suppressor: keeps your shots off the minimap.
View details
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Greaves AccuSpot 3xOpticLVL 22
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Bowen X-25 IROpticLVL 48
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
VAS Duo Hybrid SightOpticLVL 35
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
PrismaTech Turbo 4xOpticLVL 26
SPECIAL CODE
MK.78 Lightframe PDW ConversionOfficial referenceOptic
MK.78 Lightframe PDW Conversion
Optic
Unlocked via Weekly Challenge Reward.
No verified effect summary is published for this attachment.
View detailsExact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
LTI ReflexOpticLVL 9
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
VAS LEDOpticLVL 5
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Kepler T-Range HoloOpticLVL 17
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
EMT3 Holo Mk.2OpticLVL 13
Exact image unavailable — Magazine
SPECIAL CODE category presentation — not the exact attachment geometry.
MFS Heatshield Belt FedMagazine
MFS Heatshield Belt Fed
Magazine
Prestige
Takes longer to overheat and improves mobility in addition to removing movement penalties when…
View detailsExact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
LTI Target Finder v.2OpticLVL 40
LTI Target Finder v.2
Optic
Unlocked at Weapon Level 40.
Custom reticle visibility was patched for this optic.
View detailsExact image unavailable — Laser
SPECIAL CODE category presentation — not the exact attachment geometry.
Convergence Box LaserLaserLVL 14
Convergence Box Laser
Laser
Unlocked at Weapon Level 14.
Steady laser: steadier aim while aiming down sights.
View detailsExact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Greaves Ultra ZoomOpticLVL 31
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Circuit-Z RangefinderOpticLVL 44
Circuit-Z Rangefinder
Optic
Unlocked at Weapon Level 44.
Optic: a sight for clearer aiming.
View detailsExact image unavailable — Barrel
SPECIAL CODE category presentation — not the exact attachment geometry.
14" Kore BarrelBarrel
14" Kore Barrel
Barrel
Unlocked via Weekly Challenge Reward.
Long barrel: longer damage range, slower aiming.
View details