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Production information
Type Ballistic (Direct Fire)
Tech Base Inner Sphere
Year Availability 2443 (TH)[1]
Technical specifications
Heat 3[2]
Damage 10[2]
Minimum Range N/A
Short Range 1-5[2]
Medium Range 6-10[2]
Long Range 11-15[2]
Extreme Range 16-20[2]
Tons 12[2]
Critical Slots 7
Ammo Per Ton 10[2]
Cost (unloaded) 200,000
Ammo Cost (per ton) 6,000
BV (1.0) 124
BV (2.0) 123[3]
15 (Ammo)[3]


The Autocannon is a direct-fire ballistic weapon, firing HEAP (High-Explosive Armor-Piercing) rounds at targets either singly or in bursts.

Different manufacturers and models of autocannons have different calibers (25mm-203mm) and rates of fire. Due to this, autocannons are grouped into generic "classes" of autocannons with common damage ratings, with Autocannon/10s causing more damage than lower-caliber autocannons while retaining a moderate range.[4]

While not quite as deadly as an AC/20 when it comes down to raw damage, the AC/10 is potentially extremely dangerous to face when fighting against a pilot with good aim. The AC/10 is capable of stripping all the armor off the head of a 'Mech in a single shot, assuming the armor is standard armor. The AC/10 is also the first Autocannon without a minimum range bracket, making it very useful for Brawler and Juggernaut 'Mechs.

An example of the rating system: the Crusher Super Heavy Cannon is a 150mm weapon firing ten shells per "shot", while the Chemjet Gun is a 185mm weapon firing much slower, but causing higher damage. Despite their differences, both are classified as Autocannon/20s due to their damage output.


The Terran Hegemony introduced a prototype AC/10 in 2445. It cost five times as much as a standard Autocannon/10, would jam like an Ultra Autocannon, and only carry 8 reloads per ton of ammunition.[5]

An Autocannon/10 can use special munitions to increase its effectiveness.


The Autocannon/10 is manufactured on the following planets:

Armstrong Buster[edit]

Manufactured on Manufactured by Typically used in References
Armstrong Industries Clint prototype [6]

Federated Autoloader/10-B[edit]

Manufactured on Manufactured by Typically used in References
Unknown Federated Industries T-12 Tiger Medium Tank [7]

Luxor D-Series[edit]

The Luxor is known for having ammunition feed issues.

Fires 80mm shells[8]

Manufactured on Manufactured by Typically used in References
New Avalon Corean Enterprises Centurion

Mydron Model B[edit]

Manufactured on Manufactured by Typically used in References
Gulkana Yeffters Weapons Factory Blade [9]

Pontiac 50[edit]

Manufactured on Manufactured by Typically used in References
Sterope Sterope Defense Industries  ??? [citation needed]

SarLon MaxiCannon[edit]

Manufactured on Manufactured by Typically used in References
New Samarkand
Aldis Industries
New Samarkand Metals
 ??? [citation needed]

Western Heavy[edit]

Manufactured on Manufactured by Typically used in References
New Vandenberg New Samarkand Metals/Vandenberg MilTech TLS-1B Talos [10]
Brand Planet Company Used by References
Ceres Arms Model T Menke Ceres Metals Industries  ??? [citation needed]
Defiance Killer Type T Hesperus II Defiance Industries  ??? [citation needed]
Federated Autocannon Novaya Zemlya Federated Industries  ??? [citation needed]
Imperator-B Various Imperator Automatic Weaponry
Kallon Industries
 ??? [citation needed]


  1. Interstellar Operations, p. 118, "Prototype Dates For Basic Weapons Table"
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Tech Manual, p. 341, "Inner Sphere Heavy Weapons And Equipment Table"
  3. 3.0 3.1 TechManual, p. 317, "Inner Sphere Weapons and Equipment BV Table"
  4. TechManual, p. 207, "Autocannons"
  5. Experimental Technical Readout: Primitives, Volume 4, p. 16
  6. Technical Readout: 3025, p. 38
  7. Historical: Reunification War, p. 211, "T-12 Tiger Medium Tank"
  8. Ghost of Winter, c. 1
  9. Record Sheets: 3085 Unabridged - The Cutting Edge, p. 97
  10. Historical: Reunification War, p. 207-208, "TLS-1B Talos"