Despite its present obsolescence as a modern short range anti-aircraft weapon, the ZSU-23-4 is still deadly for enemy light armoured vehicles, infantry and firing points as an infantry-support vehicle.
There are three active Shilka operators in Africa.
Egypt
Algeria
Nigeria
There are three active Shilka operators in Africa.
Egypt
Algeria
Nigeria
The Algerian army fields more than 200 "Shilka's". Algeria modernized the processing of the “Shilka” guns and also adapted it with Igla missiles. Algeria's Shilka's can now effectively hit ground, sea and air target 
During the Yum Kippor war, the Egyptian army decried its limited ability to defend itself against Israeli air raids in the Sinai beyond the 10km terrain that was covered by SAM sites west of the Sinai. This problem put Egyptian planners in a dilemma.
In 1974 the Egyptian army aquired large quantities of mobile anti-aircraft artillery systems, most notably 350 ZSU 23-4 Shilka's, which is deadly against low flying aircrafts
Nigeria aquired 40 units of ZSU 23-4 Shilkas in the 1980's.
What is preventing the Nigerian army from modernizing the Soviet era Shilka systems?..like installing infrared equipment, new guidance system, missiles?
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