Outside of the fuel, propulsion, airframe, etc, the full-sized system (ordinance, electronics, firing system, etc) weighs in at something like 2000-2500 lbs.
Here on the Predator IV, the weight is probably something close to 750-1000 lbs, thus a mini-Hail Storm system as compared to the full system.
I'll say that's nice and heavy (not to mention demoralizing to those depending on the ChiComs to provide air defense).