Honest question: I've seen several videos of people shooting down drones, and obviously, it's very hard to hit them. There are often discussions about cost-effective means of countering cheap FPV drones. Is there a good reason light (i.e. man-portable) flak guns haven't made an entry yet?
Quite simply, I've wondered several times what is preventing anyone from equipping their soldiers with 5.56 mm or 7.62 mm flak rounds that can be fired from standard rifles/MGs. There is of course the issue of programming the detonation distance, but I can imagine several ways of potentially achieving that, for example a muzzle-mounted piece that programs the ammo on exit, or something you attach to the magazine itself.
With the extreme prevalence of drones, I would imagine that ensuring that every soldier, or at least every squad, has a couple mags of flak ammo that they could use to tear up any drone within 100 m would be a massive benefit.
