I own a couple of these Turkish shot guns for self defense. they are very reliable. The breakin I believe was to fire 200 rounds. I did, and there were no malfunctions. The internal workings were dirty with a slime created by the gun oil and the spent powder, but the thing just kept on firing.
It’s max effective range is roughly 60 yards. The best ammo I found is double aught military or LEO shells as they deliver the tightest shot group.
I have a 20 round drum and quick firing the weapon will put out 180 double aught size balls in less a minute, which should easily take out a drone, assuming it’s close enough to hit. And if it’s that close, your likely toast anyway.
How is the recoil for a quick 20-round drum?