A number of variants were built on the same chassis as the TAM tank. The original program called for the design of an infantry fighting vehicle, and in 1977 the program finished manufacturing the prototype of the Vehículo de Combate Transporte de Personal (Personnel Transport Combat Vehicle), or VCTP. The VCTP is able to transport a squad of 12 men, including the squad leader and nine riflemen. The squad leader is situated in the turret of the vehicle; one rifleman sits behind him and another six are seated in the chassis, the eighth manning the hull machine gun and the ninth situated in the turret with the gunner. All personnel can fire their weapons from inside the vehicle, and the VCTP's turret is armed with Rheinmetall's Rh-202 20 mm (0.79-inch) autocannon. The VCTP holds 880 rounds for the autocannon, including subcaliber armor-piercing DM63 rounds. It is also armed with a 7.62 mm FN MAG 60-20 machine gun mounted on the turret roof. Infantry can dismount through a door on the rear of the hull. The commander has a day sight and seven observation periscopes, while the gunner has a day sight and three observation periscopes.