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At a glance
Rheinmetall Oerlikon Millennium Gunlarger figure on 3 of 4
Measured figures
Length
Single source5.5 m[source]
Length
Single sourceConfiguration
| Specification | Rheinmetall Oerlikon Millennium Gun | ZU-23-2 |
|---|---|---|
| Type | CIWS[source] | Towed 23 mm anti-aircraft twin autocannon[source] |
| Place of origin | Switzerland[source] | Soviet Union[source] |
| In service | 2003–present[source] | 1960–present[source] |
| Used by | Danish Navy Venezuelan Navy Indonesian Navy[source] |
ZU-23-2larger figure on 1 of 4
Counts only measures both sources give with the same scope. A larger figure is not a better system.
4.57 m (10 ft)[source]
Rate of fire
Single sourceSingle shot Rapid Single Shot Burst (automatic fire)
Single sourceSingle shot Rapid Single Shot: 200 rounds per minute Burst (automatic fire): 1000 rounds per minute[source]
cyclic
Single sourcepractical (per cannon)
Single sourceAHEAD
Single sourceAPDS/T
Single sourceHEI
Single sourceAHEAD: 1,050 m/s (3,400 ft/s) HEI: 1,175 m/s (3,850 ft/s) APDS/T: 1,440 m/s (4,700 ft/s)[source]
87.3 calibers
Single source2.008 m (79.1 in) (87.3 calibers)[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
See Operators section[source] |
| Designed | 1995[source] | Late 1950s[source] |
|---|
| Manufacturer | Rheinmetall Air Defence , Oerlikon Contraves[source] | — |
|---|
| Developed into | Rheinmetall Oerlikon Skyranger 35[source] | — |
|---|
| Shell | 35×228mm[source] | 23x152B[source] |
|---|
| Barrels | Singular[source] |
|---|
| Action | Gas-operated four-chamber revolver cannon[source] | Gas operated[source] |
|---|
| Elevation | -15 / +85 degrees rate: 70 degree/s[source] | −10° to +90°[source] |
|---|
| Traverse | 360 degrees rate: 120 degrees per second[source] | 360°[source] |
|---|
| Feed system | 252 linkless rounds in installation[source] | 2x 50 round belt[source] |
|---|
| Wars | — | Angolan Civil War South African Border War Ethiopian Civil War Lebanese Civil War Soviet–Afghan War Western Sahara War Somali Civil War Iran–Iraq War United States invasion of Grenada Second Sudanese Civil War Siachen conflict Operation Praying Mantis Gulf War Georgian Civil War First Chechen War Second Chechen War War in Afghanistan (2001–2021) South Lebanon conflict (1985–2000) 2006 Lebanon War Russo-Georgian War First Libyan Civil War Sudanese conflict in South Kordofan and Blue Nile Syrian Civil War Northern Mali conflict Russo-Ukrainian War War in Donbas Second Libyan Civil War Yemeni Civil War (2014–present) Tigray War Russo-Ukrainian war War in Amhara Sudanese civil war (2023–present) 2025 India–Pakistan conflict Iran–Israel war 2026 Afghanistan–Pakistan war[source] |
|---|
| Designer | — | KBP Instrument Design Bureau[source] |
|---|
| Produced | — | 1960–present [1][source] |
|---|
| Variants | — | See Variants and upgrades[source] |
|---|
| Reported operators | — |
|
|---|
2000 rpm cyclic, 400 rpm practical (per cannon)[source]