Name: Kuat Drive Yards All Terrain Armored Conveyance (AT-AC)
Type: Mechanical Horse
Scale: Speeder
Length: 2 meters
Height/depth: 2.2
Skill: Walker operation: AT-AC
Crew: 1
Crew Skill: Vehicle blasters 5D, walker operation 5D
Cargo Capacity: 5kg
Cover: Full
Cost: Not available for sale
Manoeuvrability: 1D
Move: 19; 55 kmh
Body Strength: 5D
Weapons:
        Blaster cannons (2)
                Fire Arc: Front
                Skill: Vehicle blasters
                Fire Control: 2D
                Range: 50-500/1.5/3 km
                Damage: 5D
        Stun blasters (2)
                Fire Arc: Front
                Skill: Vehicle blasters
                Fire Control: 2D
                Range: 50-200/500/1 km
                Damage: 3D

Description: One of the elements that the Empire tried to introduce was standardisation across all of their forces, this made logistics and supply chain far easier to maintain. Simplified maintenance, and also provided a unified image across the entire galaxy, so at a glance everyone recognised the might of the Empire.
Perhaps taking it a step too far, the AT-AC was the idea that smaller walkers should visually appear to be the same as large ones, leading to improved visual cohesion and identity.
The AT-AC is a small riding Walker, similar in role to the older AT-RT Reconnaissance Walker, allowing one trooper to utilise heavier weapons and increased mobility. And in that role the walker was semi successful, although was slightly slower than its predecessor, it was more rugged.
However, the fact that it appeared that the Stormtrooper rider was sitting on a tiny AT-AT proved laughable, and the design was abandoned.