If i am not wrong , these were ex PAF mirage 5, which were transferred free to PN, then PN only pay for its updation.BTW No 7 SQN Mirage VPA were bought from Navy's budget. These were specifically equipped with Agave radar and armed with Exocets.
Hence have never rotated out of PAF Masroor. Their primary mission is to be seconded to the Navy in times of hostilities. Same can be with the Js
@Khafee. @Gripen9