What more do you need to know than the name? It's called an advanced gun system, and that's exactly what it is! This cutting-edge weapon was built for one specific vessel; the USS Zumwalt, which is the most advanced warship in the Navy's entire fleet.
The AGS is a 155mm gun mounted on a turret, and with a range of 63 nautical miles, they can fire over three times farther than the standard guns fitted to other destroyer-class ships.