They don't even need guns. Drones can just lift a rock or metal sphere up a few hundred feet and drop it over the target. Imagine a fleet of 50 drones dropping

They don't even need guns. Drones can just lift a rock or metal sphere up a few hundred feet and drop it over the target. Imagine a fleet of 50 drones dropping dense objects onto a house or car: would be more destructive than an automatic weapon, and harder to avoid. I wonder if standard BBs or ball bearings could achieve sufficient terminal velocity to pierce skin - would mitigate accuracy requirements if you could dump them by the dozens or hundreds.