Stella Self-Propelled Anti-Aircraft Weapon

ZVU 40 Mk I
Initial production variant, missiles had 8km range, had no cannons, was mounted on the Foulkon Armored Fighting Vehicle chassis

ZVU 40 Mk II (1994)
upgraded radar suite, began using Kastellax tank chassis, transport loader variant, and repair and maintenance vehicles (ZVL 40 and ZVR 40), addition of 20 mm cannons

ZVU 40 Mk III (2004)
Improved fire control system and radar suite, missile range increased to 10km

ZVU Mk IV (2019)
Further improved fire control system, updated radar suite, upgraded to 35mm cannons,detection range of 40km, tracking range of 33km missile range of 18km