LB-X Autocannon.jpg
Production information
Type Ballistic (Direct/Cluster)
Tech Base Clan / Inner Sphere (IS)
Year Availability Clan = 2825 (CCY)

IS = 3058 (FS)

Technical specifications
Heat Clan = 1

IS = 1

Damage Clan = 5 (slug)
1/pellet (cluster)

IS = 5 (slug)
1/pellet (cluster)

Minimum Range Clan = 3

IS = 3 IS(THB) = 4

Short Range Clan = 1-8

IS = 1-7 IS(THB) = 1-8

Medium Range Clan = 9-15

IS = 8-14

Long Range Clan = 16-24

IS = 15-21

Tons Clan = 7

IS = 8

Critical Slots Clan = 4

IS = 5

Ammo Per Ton Clan = 20

IS = 20

Cost (unloaded) Clan = 250,000

IS = 250,000

Ammo Cost (per ton) Clan = 9,000 (slug)
15,000 (cluster)

IS = 9,000 (slug)
15,000 (cluster)

BV (2.0) Clan = 93[1]
12 (Ammo)[1]

IS = 83[2]
10 (Ammo)[2]


Like the LB 10-X AC, the LB 5-X AC is capable of firing two different types of ammunition: slug and cluster. A slug shot is akin to a traditional autocannon round that deals 5 points of damage to one location. A cluster shot, however, fragments like a shotgun round and spreads its damage around. This effect creates flak that is useful against VTOLs.


In the years between the Second Exodus and the beginning of Operation KLONDIKE the nascent Clans began development of what would become the LB 5-X. Experimental prototype versions of this new weapon were used during Operation KLONDIKE in small quantities. The Clan Prototype LB 5-X available during this period has identical stats to the Inner Sphere LB 5-X Autocannon, other than that it requires 1 additional critical slot, and when rolling on the Cluster Table to determine the number of hits from cluster munitions, a -1 modifier must be applied to the result, down to a minimum result of 2.[3]


Brand Planet Company
Mydron Excel 5SG Gulkana Yeffters Weapons Factory
Type OVR-X[4] [5] Unknown Unknown
Unknown Bithinia Bithinian Ballistics[6]
Unknown Hesperus II Defiance Industries[6]
Unknown Kendall Kali Yama - Alphard Trading Corporation[6]
Unknown Kalidasa Quickscell Company[6]


This item was also previously published in the Tactical Handbook with slightly different stats.

See Also[edit]

The LB 5-X Autocannon has been used in various video games, each with their own stats for the weapon; below is a list of the games that use it along with a link to each version's stats:


  1. 1.0 1.1 TechManual, p. 318, "Clan Weapons and Equipment BV Table"
  2. 2.0 2.1 TechManual, p. 317, "Inner Sphere Weapons and Equipment BV Table"
  3. Historical: Operation KLONDIKE, p. 156, "Prototype Clan Systems"
  4. Technical Readout: 3058 Upgrade, p. 178 "Thresher"
  5. Technical Readout: 3060, p. 50 "Zoyra Light Tank"
  6. 6.0 6.1 6.2 6.3 Tactical Handbook, p. 54