English: The weapon's automation uses the energy of the short recoil of the barrel. Ribbed barrel, air-cooled. The weapon was fed from magazines with a capacity of 15 rounds fed from the left side of the receiver. Universal M.1933 (F.4) or M.1937 (F.7) gun carriages were used , enabling fire at ground and air targets. When towing, the gun was attached to a fore-end capable of holding 180 shells (total weight of the loaded 975 kg). If necessary, the guns were mounted on the bed of a truck or disassembled for pack transport on four horses. The crew consisted of 6 soldiers.