M55 A4 B1 guns of the former Army of Republika Srpska
Type
Towed 20 mm Anti-Aircraft Triple Autocannon
Place of origin
Yugoslavia/Serbia
Service history
In service
1955–present
Used by
See Operators
Wars
Yom Kippur War Angolan Civil War South African Border War Rhodesian Bush War Mozambican Civil War Lebanese Civil War Salvadoran Civil War Yugoslav Wars Second Nagorno-Karabakh war Russian invasion of Ukraine
Production history
Designer
Zastava Arms
Designed
1955–1971
Manufacturer
Zastava Arms
Produced
1971–present[1]
Variants
See Variants section
Specifications (Zastava M55)
Mass
1,100 kg (2,400 lb) loaded, 970 kg (2,140 lb) unloaded
Length
1.47 m (4 ft 10 in) (driving condition)
Barrel length
1,956 mm (77.0 in) L/70
Width
1.27 m (4 ft 2 in) (driving condition)
Height
4.30 m (14.1 ft) (driving condition)
Crew
6 -- gunners and commander
Shell
20x110mm Hispano
Caliber
20 mm
Barrels
3
Action
Gas operated
Elevation
+83° to -5
Traverse
360°
Rate of fire
1,950 and 2,250 rpm cyclic, 700 rpm practical
Muzzle velocity
Armour-piercing: 840 m/s (2,800 ft/s), High-explosive incendiary: 850 m/s (2,800 ft/s)
Effective firing range
2,000 m (6,600 ft) (air), 2,500 m (8,200 ft) (ground targets)
Maximum firing range
4,000 m (13,000 ft) (vertical), 5,500 m (18,000 ft) (horizontal)
Feed system
3 x 60 round top-fed drum magazines
The Zastava M55, also designated 20/3-mm-M55, is a Yugoslavian/Serbian 20mm triple-barreled automatic anti-aircraft gun developed in 1955 and produced by Crvena Zastava (now Zastava Arms company) in Kragujevac, Serbia, for Yugoslav People's Army use and also for the export market. In addition to the basic towed model M55 A2, the variants M55 A3 B1, M55 A4 B1, and the BOV-3 SPAAG were also developed.
The ZastavaM55, also designated 20/3-mm-M55, is a Yugoslavian/Serbian 20mm triple-barreled automatic anti-aircraft gun developed in 1955 and produced...
20°54′51″E / 44.00806°N 20.91417°E / 44.00806; 20.91417 Zastava Arms (Serbian: Застава оружје, Zastava oružje) is a Serbian manufacturer of firearms and artillery...
artillery piece M55 machine gun trailer mount, an American quadruple .50 caliber machine gun system based on the M45 Quadmount ZastavaM55, a Yugoslav/Serbian...
South Africa Yugoimport-SDPR M71/08 Serbia Single barrel development of ZastavaM55 Oerlikon KAE (KAA/KAB) Switzerland 20×128 mm Formerly known as Oerlikon...
John Keegan, page 589 World Armies, ISBN 0-333-17236-1 Photos of a ZastavaM55 autocannon captured by the Rhodesian Security Forces in Mozambique, September...
Saudi Arabian-led intervention in Yemen Russian invasion of Ukraine ZastavaM55 ZU-23-2 Семен Федосеев (2009). Пулеметы России. Шквальный огонь. Яуза...
company was equipped with triple barrel anti-aircraft guns type 20 mm, ZastavaM55. Chief of the General Staff (Kuwait) Fahad Al-Ahmed Al-Jaber Al-Sabah...
mounted on MT-LBs. ZU-23-2 Soviet Union 23 mm Some mounted on MT-LBs. ZastavaM55 Yugoslavia 20 mm Some mounted on MT-LBs. ZSU-23-4 Shilka Soviet Union...
Medium-short rang radar 12 Sweden Delivered in 1981 Anti-aircraft guns ZastavaM55 3x20mm anti-aircraft guns 100 Yugoslavia Mostly employed as direct-fire...
weapons". N1. 15 March 2022. Retrieved 23 May 2022. "Britain purchased Zastava M70 assault rifles for Ukrainian soldiers training". Archived from the...
guns and anti-aircraft autocannons. The latter consisted of Yugoslav ZastavaM55 20mm triple-barreled, Soviet ZPU (ZPU-1, ZPU-2, ZPU-4) 14.5mm and ZU-23-2...
Doboj A Danish Leopard 1 preparing to drive over and crush a Serbian ZastavaM55 anti-air gun The crew of an Italian B1 Centauro deployed as part of IFOR...
Origin Quantity Status Notes KS-12 Anti-aircraft gun Soviet Union 16 INS 61-K Autocannon Soviet Union 40 INS ZastavaM55 Autocannon Soviet Union 50 INS...
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