My experience with DJI drones is that once you put anything on them, the tuning of their flight controllers leads to substantially worse flight times, stability

My experience with DJI drones is that once you put anything on them, the tuning of their flight controllers leads to substantially worse flight times, stability, and overall safety. I know the Mini 3 can carry a naked GoPro without struggling too much, so a mavic might be able to carry a couple hundred grams with decent performance. But the flight characteristics go out the window pretty quickly, so I suspect you couldn’t carry much explosives on these things. I have no idea how much is needed. Maybe a small amount is fine.