The APC known as the "Achzarit" is an APC which is based on the "Tiran" a Russian model captured in combat- the T-55/T-54. The tank has been converted by the Armament Corps into a heavy APC. The motor and gearbox have been changed, with additional armored plating, an external rear exit and updated suspension in order to improve maneuvering and handling. The Achzarit has advanced armored plating, and is equipped with four MAG machine guns, one of which is controlled from the inside of the vehicle, and a smoke-grenade launcher of IDF manufacture. The APC started serving the IDF at the end of the 80s, and has served in the northern region of the country since then. In recent years it has begun entering service in Judea, Samaria, and the Gaza regions. In 2005 certain models of the Achzarit were updated to serve as ambulance/APC.