As of 2019, the ROC army has 480 M60A3s, 450 CM11s (modified M48 turrets mated to M60 chassis), and 250 CM12s (CM-11 turrets mated to M48 hulls). The design and technology used in the tanks date back to the 1940s and 1950s, including their 105mm rifled gun and utilizing traditional steel armor plating rather than composite materials used in modern armored fighting vehicles. It is expected that majority of the ROC Army’s armored units would continue to be equipped with legacy tanks in upgraded form after the army acquires the newer modern tanks. As of 2015, some CM11 tanks are observed to be upgraded with explosive reactive armor around the turret and hull.