It happened by accident. I considered impossible to place 3 AC/20s in a combat vehicle, but it is not:
Khalifa AC20
Mass: 100 tons
Movement Type: Tracked
Power Plant: 300 Fuel Cell
Cruising Speed: 32.4 kph
Maximum Speed: 54 kph
Armor: Standard
Armament:
3 AC/20
Manufacturer: Unknown
Primary Factory: Unknown
Communication System: Unknown
Targeting & Tracking System: Unknown
Introduction Year: 2950
Tech Rating/Availability: E/X-E-D-D
Cost: 5,255,000 C-bills
Overview
One of the most deadly combat vehicles of its time, the Khalifa is an expensive assault tank able to deal with any BattleMech of its time.
Capabilities
Armed with three Autocannons class 20, well armored and with decent mobility for a 100ton tank, the Khalifa is a frightening view for any opposing BattleMech and probably its last view if catch in a short-range urban combat or ambush. Besides its lack of long-range weapons or anti-infantry weapons, its main weakness comes from the Fuel Cell Engine, an adaptation from a civilian power plant most used in Heavy Industrial BattleMechs and utility vehicles. Yet compact, this Fuel Cell engine is prone to malfunctions.
Deployment
Due to the excessive cost and unreliable engine, the Khalifa is used in small numbers mostly in defense of strategic locations. One single unit is a serious threat to any BattleMech if engaged at short range.
History
The first combat deployment of the Khalifa was a complete disaster as most of the units never reached the frontline due to mechanical failures. Later on, their weaknesses were better understood and the Khalifa became a very effective “mech buster”.
Type: Khalifa
Technology Base: Inner Sphere (Standard)
Movement Type: Tracked
Tonnage: 100
Battle Value: 1,207
Equipment Mass
Internal Structure 10
Engine 300 Fuel Cell 23
Cruising MP: 3
Flank MP: 5
Heat Sinks: 1 0
Control Equipment: 5.0
Power Amplifier: 0.0
Turret: 4.5
Armor Factor 152 9.5
Internal Armor
Structure Value
Front 10 40
R/L Side 10/10 30/30
Rear 10 22
Turret 10 30
Weapons
and Ammo Location Tonnage
Trailer Hitch Rear 0.0
3 AC/20s Turret 42.0
AC/20 Ammo (30) Body 6.0