Ultra AC/20

Ultra AC/20
Production information
Type	ballistic (rapid-fire)
Tech Base	Clan / Inner Sphere (IS)
Year Availability	Clan = 2825 (CSV) IS = 3060 (LA)
Technical specifications
Heat	Clan = 7/shot IS = 8/shot
Damage	Clan = 20/shot IS = 20/shot
Minimum Range	Clan = 0 IS = 0
Short Range	Clan = 1-4 IS = 1-3
Medium Range	Clan = 5-8 IS = 4-7
Long Range	Clan = 9-12 IS = 8-10
Tons	Clan = 12 IS = 15
Critical Slots	Clan = 8 IS = 10
Ammo Per Ton	Clan = 5 IS = 5
Cost (unloaded)	Clan = 480,000 C-bills IS = 480,000 C-bills
Ammo Cost (per ton)	Clan = 20,000 C-bills IS = 20,000 C-bills
BV (2.0)	Clan = 335 42 (Ammo) IS = 281 35 (Ammo)

Description

The Ultra AC/20 (also UAC/20) was the largest bore Ultra autocannon. Like all Ultra autocannons, it was capable of twice the rate of fire of a standard autocannon, doubling its heat output and—potentially—its damage. Only the Clan HAG 40 could match the sheer damage output of the Ultra AC/20. The only weapons capable of delivering more damage to one location were the heavy Gauss rifle and the experimental improved heavy Gauss rifle.

Variants

In the years between the Second Exodus and the beginning of Operation KLONDIKE, the nascent Clans began development of what would become the Ultra AC/20. Experimental prototype versions of this new weapon were used during Operation KLONDIKE in small quantities. The Clan prototype Ultra AC/20 available during this period had identical stats to the Inner Sphere Ultra AC/20 required additional mounting space and was more prone to jamming.

Models

The Ultra AC/20 was used on the following planets in the Inner Sphere:

Aero-Model 4

Planet	Manufactured by	Typically used in	References
Kirin	Kirin Orbital Works SJ-3	Xerxes

Ceres Huang Di

Planet	Manufactured by	Typically used in	References
Menke, St. Ives	Ceres Metals Industries	Po

Defiance Thunder

Planet	Manufactured by	Typically used in	References
Hesperus II	Defiance Industries	Blitzkrieg, Demolisher II, Hauptmann

Devastator

The Devastator was built to Clan specifications and had a caliber of 200 mm.

Planet	Manufactured by	Typically used in	References
Various	Various	Hunchback IIC

Devastator Type 20

Planet	Company	Used by	References
Tamaron	Ashton 'Mech Production Complex

Model SH

The Model SH Ultra Autocannon was built to Clan specifications.

Planet	Manufactured by	Typically used in	References
Sudeten	Olivetti Weapons, Tokasha MechWorks Alpha	Bane (Kraken)

Mydron Type 20

Planet	Company	Used by	References
Gulkana	Yeffters Weapons Factory

Type 10

The Type 10 was a 120 mm cannon.

Planet	Manufactured by	Typically used in	References
Luthien	Luthien Armor Works	SM1 Tank Destroyer

Notes

• This article refers to a common object and addresses the object as a common noun. The preferred term is "Ultra AC/20" or "UAC/20" (except on section titles & table headings, where "Ultra Autocannon/20" is favored).

Bibliography

• BattleTech Master Rules
• A Call to Arms (novel)
• Historical: Operation Klondike
• The Price of Duty (novella)
• Tactical Handbook
• Technical Readout: 3060
• Technical Readout: 3067
• Total Warfare