The original 75 mm SA 50 gun was loaded by an automatic loading system fed by two six-round magazines located in on either side of the automatic loader in the turret's bustle. The 12 rounds available in the drum magazines meant that the crew could engage targets quickly; however, once those rounds were expended, the vehicle commander and gunner could either manually refill them from within the turret or retreat to cover and reload shells from outside the vehicle through hatches above.
hull is frontally resistant to 20mm ap rounds main round: PCOT-51P : a 6.7 kg APCBC-T with a muzzle velocity of 1000 m/s, it is able to penetrate 170 mm of RHA at an angle of 0° at 1000 m (202mm RHA at 0° 0m)
