The 8th biennial 'IDEAS 2014' show is being attended by 136 international and 34 Pakistani companies and an important aspect of the event will be an international defence seminar.
Russia will make its first appearance in the exhibition, indicating improvement in defence ties with Pakistan.
Russia had recently upgraded Pakistan to category B from D for arms sales, which means that Islamabad can now buy weapons from Russian market.
At the event, several high-level meetings among foreign delegates, key government officials and participants have been planned on the sidelines of the exhibition for forging alliances in defence production.
JF-17 Thunder jets, manufactured with China's cooperation, would be put on display at the exhibition.
Pakistan hopes to find international buyers for its defence products.