Model Variants (Including Prototypes)
M163 - Base Series Designation
M163A1 - Gun Mount modification to M113A1 APC standard.
M163A2 - Powertrain upgrade to M113A2 APC standard.
M163 PIVADS - Upraded targeting system; appearing in 1984.
M167 - Towed Turret Variant of M163
"Machbet" - Israeli Variant; fitted with 4 x FIM-92 Stinger short-range missile systems; upgrading tracking suite; data sharing.