The rival families from the villages of Baskoy and Karatepe, in a Kurdish area near Diyarbakir, clashed on Saturday after the meal that breaks the dawn-to-dusk fast during the holy Muslim month of Ramadan.
Turkish army commandos stepped in to prevent the vendetta from escalating, the Dogan news agency reported.
They remained in the two villages on Sunday after searches turned up scores of weapons, including assault rifles.
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Four wounded suspects were being treated in nearby hospitals under police surveillance.
A similar feud in another Kurdish area in the eastern province of Mus left seven dead on July 17.
