Model Variants (Including Prototypes)
ZSU-23-4 "Shilka" - Preproduction and Production Model Designation.
ZSU-23-4V - Modernized Variant of 1968
ZSU-23-4V1 - Modernized Variant of 1970; fitted with V-6R-1 series engine.
ZSU-23-4M "Biryusa" - Appearing in 1973; fitted with modernized 2A7M autocannons with pyrotechnic loading system.
ZSU-23-4MZ - Appearing in 1977; fitted with FOF (Friend or Foe) identification system; new standard for previous ZSU-23-4 production models.
ZSU-23-4M2 - Appearing in 1978; revised for Soviet operations in Afghanistan war; night sight added; ammunition increased from 2,000 to 4,000 projectiles.
ZSU-23-4M4 - Appearing in 1999; modernized variant; SA-18 missile launchers added; laser emission sensors; electro-optical vision systems; improved radar; hydrostatic transmission system; hydraulic boosters added; improved mobility.
ZSU-23-4MP "Biala" - Polish modernized version appearing in 2000; fitted with Grom anti-aircraft missiles; digital passive aiming system replacing radar.
4M4 - Ukrainian ZSU-23-4 Variant
4M5 - Belorussian ZSU-23-4 Variant
"Donets" - Ukrainian modernized version appearing in 1999; installed on T-80UD Main Battle Tank chassis; improved turret; Strela-10 missile systems installed; increase ammunition capacity.