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40px-Terminal.png This article, M20 Firefly Multiple Launch Rocket System, was written by Ajax 013. Please do not edit this fiction without the writer's permission.
Firefly MLRS
Production information



Multiple Launch Rocket System

Technical specifications

6.8 Metres


2.9 Metres


2.7 Metres


25.2 Tonnes

Maximum acceleration

67 KPH

Engine Power

V-8 Diesel engine producing 550 horse power


Amalgamated polymer lattice, five layers of alternating titanium and AEGIS plates, coated with extreme temperature resilient Kevlar

Sensor Systems
  • Target Acquisition and Designation System, Driver Night Vision System
  • Motion Trackers
  • Millimetre Wave RADAR
  • GPS
Targeting systems
  • Multispectrum Optical Sensors
    • Optical
    • UV
    • Thermal
    • Night Vision
  • Laser rangefinder
  • SATCOM Uplink
  • Driver
  • Gunner
  • Commander



Necros War


United Nations Space Command


"Theres nothing as satisfying in life as watching four of these things carpet bomb a enemy compound."
―Anonymous Marine

The M20 Firefly Multiple Launch Rocket System is a UNSC artillery unit. The MLRS is used to preform mid to long range artillery strikes against heavily entrenched units, being used more often than not as a barrage weapon for saturating an area with fire. The vehicle consists of a tracked chassis with an armoured cab, carrying the crew and the necessary systems for driving the vehicle, priming and aiming the weapons and coordinating and remotely operating the weapon system. On the back of the chassis is the self erecting launcher platform carrying two pods. These can be set up to carry six Crossbow rockets, with an intermediate range and high damage potential, using high explosive warheads or deadly submunitions, or carry a single Khan Cruise Missile, capable of heavy damage against a precise target, with a wide array of exotic warheads available for it. The Firefly has th full range of accurate targeting system and communication hard wear for precise targeting, submunition spread and fire co-ordination.

The Firefly is commonly used for two purposes. Engaging large armoured formations from long distances, where the common anti-armour submuntions can annihilate multiple targets, or for 'grid square removal service', causing devastation to a square kilometre of area, usually used for heavily entrenched enemies in non-strategic positions.

UNSC Remarks

"Not as accurate as the M3 or as long lasting but it does a heck lot more damage in a short time. That, and it frightens the shit outta anybody facing us."

"A battery of these can lay waste to a armoured column, town or army. Thats why they are loved so much."

"Personally? I can fire all my rockets, fuck off before counter batteries open then hide somewhere and take half an hour to reload but i'd much prefer to just have a Spam."

Ground Vehicles of the UNSC

Scorpion & Variants

Scorpion MBT | Scorpion ARRV | Scorpion AVE | Scorpion ARC | Death Stalker SPAAG | Monitor AVP | Komodo AVP | Panther CAV

Heavy Tanks

Tiger HBT | Razorback Siege Tank | Mammoth Siege Platform

Warthog Knight FAV family

Warthog FAV | Warthog Knight LRV | Gauss Hog LAAV | Rocket Hog LAAV | Guard Hog Crusader | Warthog Assassin RAV | Warthog Troop Transport | Tread Hog DTV | Warthog Medical Vehicle | Warthog Ammunition Carrier | Spark Hog MEWS | Fire Hog CB-RADAR| Warthog Recovery Vehicle | Warthog Flatbed Truck

Motorized Vehicles

Mongoose ATV | Gungoose ATV | Jackrabbit ATV | Gunrabbit ATV | Armadillo PTT | Buffalo HSV

Unified Combat Reconnaissance Vehicle

Coyote CRV | Stallion CRV | Bloodhound CRV | Puma ATV | Caracal ICV | Chameleon RV | Wallaby MEV | Ocelot AAA | Capybara C2V | Camel ASV | Bandicoot MLV | Elk REV | Mustang MGS | Manx MEWS | Boar MC

Personnel Carriers

Crocodile IFV | Mastodon APC | Bison APC | Jaguar Command Vehicle


Wolf ATAAS | Mule Cargo Loader | Mantis ADS | Cyclops HAS | Dragon ADS

Artillery and Anti-Air

Wolverine SPAAA | Bombardier SPMA | Firefly MLRS | Kodiak Heavy Artillery | Diamondback MADS

Elephant and variants

Elephant HRV | Behemoth ICP | Aurochs HAP | Alpha C2P | Omega MMP | Hippo MFH

Riverine and Landing craft

Swordfish RIB | Pike PB | Walleye PB | Orca-class Landing Craft Air Cushion

Naval Craft

Barracuda-class Corvette | Mako-class Frigate | Stingray-class Amphibious Assault Ship