It's about the scale of the solution needed I think. Turkish army ordered 14 Korkut systems (with 42 firing units) in total along with existing GDF gun modernised by Aselsan. All of them are already delivered. (Korkuts)
As you wrote İn addition to Korkuts most of the 35 mm Oerlikons were modernized i.e They have the same architecture with Korkut but towed not quite sure about the exact numbers .... around 120 firing units (?)
P.S which makes Turkey one of the biggest 35 mm Oerlikon users in the world
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