The K-50H is a 12.7x51mm heavy calibre rifle. Chambered in the 12.7mm Watch Tower cartridge it has the capabilty to penetrated up to 8mm of steel compared to the .50 Beowulf's capability of penetrating 6.35mm of steel. The weapon is equipped with a 2.5x scope and a 10 round single column magazine. The round it fires is rimmed so the weapon is internally different to the AUG and is not just a AUG with a larger caliber barrel and bolt.
50 rifles were donated to the Argentine Army and proved highly effective at taking out infantry and light skinned vehicles.