Christian Phalangist militiamen deployed twelve AML-90s as assault guns during the Siege of Tel al-Zaatar, using their elevated 90 mm cannon to knock out second or third storey fortifications shielding Palestinian guerrillas. AML-90s of the Druze Progressive Socialist Party's (PSP) People's Liberation Army (PLA) militia also swung into action against five Staghounds of the Lebanese Internal Security Forces during a raid on Fayadiyeh barracks in mid-1976. The armoured cars were incompetently handled by the leftist forces, and later abandoned near Kahale with an AMX-13 due to mechanical problems.