T-155 FIRSTINA Self Propelled Howitzer System was produced by the Institute of Mechanical Chemistry (MKEK) in order to increase the firing support capacity of the Turkish Armed Forces. Since the beginning of the 2000s, more than 300 units have been produced by the FIRSTINA Howitzer. It was used in important military operations such as Sun Operation, Euphrates Shield Operation, Zeytindalı Operation and Pençe Operation.
CDK Savunma has undertaken the serial production cabling of this project.