The zigzag landing gear doors are hardly conducive to high speed.
All of the drones that we have that look exactly like this one are
subsonic.
I tend to believe they received some drawings from Boeing.
The higher it flies, the less aerodynamic it has to be to attain supersonic speed, eh? (electronics don't need oxygen)
When the landing gear are retracted (which is most of the time, when in flight), they are flush with the rest of the aircraft, minimizing drag.
The zig-zag may be to minimize radar reflections.