OFK was set up in the year 1943 during World War-II as one of the Eastern Group Projects to meet the requirements of Ammunition for Allied Forces. After Independence, the product range of the Factory was diversified to meet the operational requirements of different Services and Para Military Forces. During Chinese War in 1962 and Pakistan Wars in 1965 and 1971, the Factory was further expanded to meet the new demands of Army, Air Force and Navy. At present this is the biggest ammunition factory in the country. The present production activity of the Factory is a combination of Hardware Component Manufacturing, Explosive Filling and Ammunition Assembly.