Aselsan's Şahin pedestal mounted 40mm gun with ATOM, made specifically against drones, would have a lower range against drones compared to a 50 cal on paper, at I believe about 600 meters. But in reality a hand cranked quad 50 cal turret without any real optics will be effective at 500 meters at most. A solution exists and is operational in low numbers. It just needs to be built and delivered more. It can auto determine, track and engage. It can be slaved to radars on base, or operated manually from a console.
Time to act was yesterday, best next time for it is today. Iranian militias in Iraq and Syria will only be a bigger threat to our soldiers in the future and we still be relying on quad 50 cals.