The primary armament is a Rheinmetall 30 mm MK 30-2/ABM ("Air Burst Munitions") autocannon, which has a rate of fire of 200 rounds per minute and an effective range of 3,000 m. The smaller 30×173mm cartridge offers major weight saving advantages for example in comparison to the Bofors 40 mm gun mounted on the CV9040 because of a much lower ammunition size and weight. The belt feed system also gives a large number of rounds ready to fire, while the 40mm offers only 24 shots per magazine. This is not a problem in a CV9040, but would force the Puma off the battlefield to reload the unmanned turret.