Fastest Target Acquisition What Would Be The Best Scope For Hunting At Night And Day For A AR-15?

What would be the best scope for hunting at night and day for a AR-15? - fastest target acquisition

In'm wondering what options should I get for my AR-15. Red Dot? My plan of fire between 0-200 meters suggestions?
You also need to be able to close to a height of 10-20 meters or something that I get the rapid acquisition of the target.