The primary armament is a 155 mm howitzer, with a secondary 7.62mm machine gun or 12.7 mm machine gun. The howitzer has an automatic loading system, providing a rate of fire of one round every 15 seconds[1] or a burst-fire rate of three rounds every 25 seconds.[2] The loader has 23 ready rounds, with seven more rounds stored in the hull. Including manual reloading of the charge, the overall firing rate is normally one round per minute for one hour.