The Shadow V Combat Airspeeder was produced near the end of the Galactic Republic. MandalMotors had it up on the market for many individual governments, whom could not afford the more expensive alternates. However, it had several drawbacks to its design, and was eventually taken off the market, when MandalMotors was under Imperial observation.
A successor, the Shadow VI, was built close to the time of the fall of Palpatine at Endor. Slated to replace the Shadow V, this combat airspeeder offered all the strengths, with fewer weaknesses. MandalMotors soon released it, albeit a bit more expensive than its predecessor, but nevertheless much more reliable.
Now, the Shadow VI is slated to see active service in defending Mandalorian borders from outside threats.