The M64 (Chinese: 六四式戰車) was an attempt by the ROCA to develop domestically produced tanks in Taiwan using parts from the M18 GMC and M42 Duster. In the 1970s, the ROCA's existing fleet of M18 GMC tanks was ageing, and there was a shortage of light tank replacements. To address this, the ROCA planned to create a hybrid tank by combining the hull of the M42 with the turret from the M18. This project, undertaken at a factory on Taiwan's main island, resulted in the M64, produced concurrently with a domestically reverse-engineered version of the M41, designated as the M65 (六五式戰車). A total of 42 tanks were converted into the M64 configuration. However, these tanks were never deployed during the height of the Taiwan Strait Crisis and were subsequently retired in the 1980s. Only a few remain preserved and are exhibited by the ROC.

Introduced during Update "Winged Lions" as a reward for Battle Pass: Season VI, "Firepower", the M64 represents the ROCA's effort to build a new tank from surplus M18 turrets and M42 Duster hulls in the mid-1970s. It served as a domestic alternative to their US-sourced tanks. Despite being heavier than the M18, the more powerful engine allows the M64 to maintain similar mobility.