Production information
Manufacturer Martinson Armaments
Production Year 3065[1]
Model LGH-4W
Class Medium
Cost 12,577,810 C-bills
Technical specifications
Mech type Inner Sphere BattleMech
Mass 55 tons
Chassis Geometric 33B Endo Steel
Armor Strasbourg Armaments Type 4 Ferro-Fibrous
Engine LTV 385 XL
Communications System Blow 107 Net(Improved)
Targeting Tracking System Scope 3580 with Targeting Computer
Heat Sinks 10 Double Heat Sinks
Speed 118.8 km/h
BV (1.0) 1,166[2]
BV (2.0) 1,450[3]


The Lightray was designed by Martinson Armaments to be a heavy scout 'Mech and was put into production in 3064. The Lightray is built on a lightweight Geometric 33B Endo Steel chassis to help maximize the available weight for weapons and equipment and features a gigantic LTV 385 XL engine, the largest that can possibly be carried by a 'Mech its size. The engine allows the scout 'Mech to outpace most other medium designs with a top speed of 118 kilometers per hour, though it lacks the added maneuverability that could be provided by jump jets. The Lightray carries ten and a half tons of Strasbourg Armaments Type 4 Ferro-Fibrous armor, giving the 'Mech a great deal of protection.[2]

Weapons and Equipment[edit]

The main weapon of the Lightray is its Tronel XIII Large Pulse Laser. Coupled with the Targeting Computer technology stolen from House Davion, this Word of Blake design is deadly accurate, even when moving at its top speed. The pair of Diverse Optics ER Medium Lasers and the Diverse Optics ER Small Laser add to the close-range damage the 'Mech can deal.[2]


  • LGH-4Y 
    This design was actually the original Lightray produced in 3064, designed before the Word of Blake ROM stole the Targeting Computer technology from House Davion. Instead of the TC, it used two SRM-2 packs and had a ton of ammunition. BV (1.0) = 1,067[4], BV (2.0) = 1,379[5]
  • LGH-5W 
    Some pilots complained about the lack of long-range weaponry on the two other Lightrays, so the -5W simply replaces the Large Pulse Laser with an ER PPC. BV (1.0) = 1,288[4], BV (2.0) = 1,674[6]
  • LGH-6W 
    A simple upgrade to the Lightray to enable it to mount the C3i system commonly found in Word of Blake units, the 6W is armed with an ER PPC supported by three ER Medium Lasers. BV (1.0) = ??, BV (2.0) = 1,554[7][8]


In German products the unit's proper name was perfectly translated to Lichtstrahl. The model code was accordingly changed to LST-4W.



  1. MUL online date for the Lightray
  2. 2.0 2.1 2.2 Technical Readout: 3067, p. 75, "Lightray 'Mech Profile"
  3. Record Sheets: 3067 Unabridged, p. 113
  4. 4.0 4.1 Combat Operations, p. 134
  5. Record Sheets: 3067 Unabridged, p. 114
  6. Record Sheets: 3067 Unabridged, p. 115
  7. Starterbook: Wolf and Blake, p. 103
  8. Record Sheets: 3067 Unabridged, p. 116
  9. Record Sheets: 3067 Unabridged, p. 117