Cyberpunk Wiki
Cyberpunk Wiki

The Mk. 31 HMG is a Power Heavy Machine Gun manufactured by Militech in Cyberpunk 2077.


The Mk. 31 HMG is a large, fully automatic, heavy machine gun that is normally mounted on a Militech Aegis X2 turret or a Minotaur, though it is possible to carry it if one has the strength. The weapon can hold up to 300 rounds, which are laden with a small explosive charge. It cannot be reloaded, and after dispensing its belt-fed magazine, is automatically discarded. The weapon is prone to overheating.[1]

Wielding one imposes a movement penalty on its user, slowing them and disabling their ability to run or dodge. It cannot be stowed or stored in the stash or inventory and, upon switching to another weapon or riding a vehicle, the HMG will be dropped. While carried, it is still possible to perform a double jump or charge jump, as well as grab on to ledges.[1]

Database Entry[]

Militech Mk


The Mk. 31 heavy machine gun was engineered with two core functions in mind: 1) mounting on armored vehicles, 2) installing on defensive perimeters. In other word, it was designed as a heavy-hitter that was meant to be bolted down. No one inside Militech ever considered anyone could or would want to carry this massive gun anywhere whether they were loaded with cyberware or not. But, as usual, it seems the human will found a way. The Mk. 31 HMG can sometimes be found cradled in the arms of heavily chromed solos and gangoons, as they're the only people capable of withstanding the powerful recoil. However, the Mk. 31 cannot be reloaded easily by one person in combat situations, effectively making it a one-hit wonder. Still, this hasn't proved a major drawback for most. By the time its clip is emptied, there's typically no one left to shoot at anyway.[1]


  • Carried by the Scav Leader miniboss during The Rescue.
  • Occasionally carried by Very Heavy enemies.
  • Can be ripped off of any Militech Aegis X2 ground turret, requiring a varied level in the Body attribute, unless the turret has been destroyed.


This weapon cannot be crafted.

Behind the Scenes[]

A massive weapon originally meant only to be used mounted, the Mk. 31 was modified for portability when advances in cyberware made carrying it possible. The grips were moved from underneath to the left and right and an advanced recoil system inspired by artillery cannons was added. Also cannon-like is its barrel, which flies backwards when shooting to chamber the next round. A mechanism on top of the barrel sprays gas downwards to cool metal temperatures when they get too high.



  1. 1.0 1.1 1.2 CD Projekt RED. Cyberpunk 2077. Video Game, Multi-Platform. Poland, CD Projekt S.A., 2020.