This gun shoots drones out of the sky

I'll stick with a shotgun loaded with buckshot.

I've seen this and a net-gun. Both seem to be effective, depending on range.

Pretty much a given as soon as some tool is developed for the battlefield someone would come up with a way to counter its use. Not a real surprise I guess. With drone to give intelligence or even carry weapons You would want to take away that advantage away from those using them. Interesting article.