Production information
Manufacturer Kallon Industries[1]
Production Year 3053[2]
Model PTR-4D[1]
Class Heavy
Cost 7,628,250 C-bills
Technical specifications
'Mech type Inner Sphere BattleMech
Mass 75 tons
Chassis Crucis G
Armor Durallex Heavy
Engine Vlar 300
Communications System Dalban Micronics
Targeting Tracking System Matabushi Sentinel
Heat Sinks 12 double
Speed 65 km/h
Jump Jets Anderson 398
BV (1.0) 1,375[3]
BV (2.0) 1,687[1][4]


The designers at Kallon Industries used the Black Hawk Clan OmniMech as the basis for the Penetrator. The Penetrator has an all energy weapons arsenal and uses twelve double heat sinks to handle the massive heat load from its weapons. The 'Mech is lacking in speed though when compared to the Black Hawk. This is because the 'Mechs designers used a Vlar 300 fusion engine for its combat durability, giving the 'Mech a top speed of 64.8 km/h. To help offset the 'Mech's lack of mobility, the Penetrator has four Anderson 398 jump jets giving it added mobility with a jumping distance of one hundred and twenty meters. The Penetrator also carries a respectable thirteen tons of armor. The 'Mech's heavy armor protection, combined with its standard engine and unlimited amounts of ammunition, make for a 'Mech that is very rugged and hard to kill. The first Penetrators started coming off the production line in 3053.

Weapons and Equipment[edit]

The Penetrator carries a blistering laser array. The primary weapons are a pair of arm mounted Diverse Optics Sunbeam ER Large Lasers for long range firepower. For close range combat, the 'Mech carries six Sutel Precision Line Medium Pulse Lasers which are mounted in its right and left torsos. Finally, the 'Mech carries its only ammunition-based weapon, a Yori Flyswatter anti-missile system, for added defense against missile attacks.


  • PTR-4F 
    Intended to act as a fire support 'Mech, The PTR-4F Penetrator sacrifices two of its Medium Pulse Lasers and the ER Large Lasers, freeing enough tonnage to add two LRM-10 missile launchers. The LRM-10s were then mated to Artemis IV fire control systems for added accuracy.[1] BV (1.0) = 1,384[3], (1,401)[5], BV (2.0) = 1,564[6]
  • PTR-6M 
    The 6M is a variant of the Penetrator that looks to alleviate the 'Mech's heat buildup by removing two of the Medium Pulse Lasers and a ton of armor and adding five additional double heat sinks.[1] BV (1.0) = 1,459[3], (1,472)[7] , BV (2.0) = 1,639[8]
  • PTR-6S 
    A simple modification of the Penetrator, the 6S model removes one and a half tons of armor. This frees enough weight to add a Guardian ECM Suite to the 'Mech, protecting the 'Mech from foes' advanced electronics. BV (1.0) = 1,391[3], (1,401)[9], BV (2.0) = 1,689[10]
  • PTR-8D
    A version that started as a refit of the original models but became a mass-produced unit to restock the depleted AFFS, the 8D tries to fix some of the issues the original model has with more modern technology, like reflective armor. First and foremost, the 8D replaces the arm-cannons with a pair of Large Re-Engineered Laser to capitalize on fighting modern armor types. Each side torso mounts 3 standard medium lasers to complement the firepower from the arm weapons. To protect the machine, a Laser AMS in the center torso covers the 'mech from missile attacks. BV (1.0) = ???? BV (2.0) = 2130 [14]

Custom Variants[edit]

  • PTR-4D Penetrator Christifori 
    The personal 'Mech of Archer Christifori modified after the Battle of Huntress, replacing the Diverse Optics large lasers with Clan-tech Extended Range Large Laser and two additional heat sinks. BV (2.0) = N/A[15]

Design Quirks[edit]

The Penetrator has the following Design Quirks:[16]

Notable Pilots[edit]

  • The Penetrator became the trademark 'Mech of AFFC officer Archer Christifori, who piloted one through the FedCom Civil War and Operation BULLDOG. Originally a stock example, Christifori's 'Mech was eventually upgraded with salvaged Clan-tech ER Large Lasers.[17]
  • During the Jade Falcon Incursion of 3058, Hauptmann Caradoc Trevena commandeered the Penetrator of his superior, who had retreated into alcoholism in the face of the Jade Falcon onslaught on Coventry. He was declared Acting Kommandant of the unit and made good use of his commandeered 'Mech during his campaign of hit-and-fade skirmishes against the Falcons.
  • Marcus Coralie Pieters, deputy commander of the Fifth Syrtis Fusiliers LCT's 'Mech battalion piloted a Penetrator. The exact spec is unknown.


  • Author Blaine Lee Pardoe stated in a blog entry that, according to his memory which he admitted could be wrong, the Penetrator was among the BattleMechs which he designed and for which he wrote the original background as initially published in TRO:3055.
  • In German products, the unit's proper name was changed to Lichtbringer, which translates to Light-Bringer. The model code was accordingly changed to LTB-4D. First german name was Zermalmer, which translates to crusher. (first print from 1994)



  1. 1.0 1.1 1.2 1.3 1.4 1.5 Technical Readout: Clan Invasion, pp. 168–169: "PTR-4D Penetrator"
  2. MUL online date for the Penetrator
  3. 3.0 3.1 3.2 3.3 Combat Operations, p. 127
  4. Record Sheets: 3055 Upgrades Unabridged, p. 97
  5. Record Sheets: 3060, p. 193
  6. Record Sheets: 3055 Upgrades Unabridged, p. 98
  7. Record Sheets: 3060, p. 194
  8. Record Sheets: 3055 Upgrades Unabridged, p. 99
  9. Record Sheets: 3060, p. 195
  10. Record Sheets: 3055 Upgrades Unabridged, p. 100
  11. Record Sheets: 3055 Upgrades Unabridged, p. 101
  12. Technical Readout: 3150, p. 223
  13. Record Sheets: 3150
  14. Recognition Guide: ilClan, vol. 27, p.13
  15. Technical Readout: Clan Invasion, p. 168 "PTR-4D PENETRATOR"
  16. BattleMech Manual, p. 93 Design Quirk Table - Penetrator Entry.
  17. Measure of a Hero