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Type MEC Weapon
Class MEC Trooper
Cost §70
Ammo Reloadable
Base Damage 6 - 8
Critical Damage 11 - 13
Critical Chance 10%
Terrain Damage 125
Effective Range Medium

The Railgun is a new MEC Trooper-only weapon in XCOM: Enemy Within.

In-Game DescriptionEdit

This high-powered, recoilless slugthrower can be fired in short bursts to devastating effect, although the sizes of its housing and power supply require it to be mounted on a MEC. Prior to our research on heavy laser weapons, we had no access to a small enough power source.

– Engineering description, XCOM: Enemy Within


The Railgun becomes available for production in Engineering after completing the Heavy Lasers research.

Production costs:


  • Effective range: Medium
  • 6-8 base damage
  • 10% critical chance
  • 11-13 critical damage

Tactical InfoEdit

  • Miniaturized power supply derived from laser tech.
  • Only equipped by MEC Troopers
  • Risk of catastrophic overheating precludes suppression with this weapon



  • Real-life railgun development is indeed hampered by inadequate materials, bulky power sources, extreme heat build-up, and can burn their rails to the point of uselessness in one shot.
  • There is significant debate whether the term "recoiless" is applicable to this weapon. A kinetic weapon (like a railgun) generates recoil by default due to Newton's Third Law of Motion in proportion with the energy of the projectile; conventional recoilless weapon designs (such as the Rocket Launcher) rely on some form of counterforce, usually a jet of flame, released from the back of the weapon, to counter (most of) the recoil. The Railgun instead has a solid butt-plate, in stark contrast with the less conventional interfaces of both the Minigun and the Particle Cannon, and is carried by a super-strong cybersuit that fires it in single shots only while solidly shouldered, while still visibly struggling with the recoil.
  • An open barrel with unconnected rails is a possible design weakness - rails repel violently during firing.
  • The Railgun is one of XCOM's three advanced projectile weapons; the others are the chemical Phoenix Cannon and the magnetic Alloy Cannon.

 XCOM: Enemy Unknown Weapons
Grenades Alien GrenadeFlashbang GrenadeFrag GrenadeGas GrenadeGhost GrenadeNeedle Grenade
Heavy LMGHeavy LaserHeavy Plasma
Launcher Rocket LauncherBlaster Launcher
MEC MinigunRailgunParticle Cannon
Pistols PistolLaser PistolPlasma Pistol
Rifles Assault RifleLaser RifleLight Plasma RiflePlasma Rifle
Shotguns ShotgunScatter LaserAlloy Cannon
Sniper Sniper RifleLaser Sniper RiflePlasma Sniper Rifle

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