Meet the GRIFF 300: an unmanned aerial system capable of lifting up to 300kg of load. The company also has 125 and 800 models, with each number suggesting the gross weight that each can carry. The endurance is up to 45 minutes. According to Griff Aviation, these mega drones are highly customizable:
Such drones could prove useful to the armed forces, law enforcement, and search & rescue teams. Pricing is not available at this time.