VTOL and Trim control track direction. (1) activates gunner control. (2) activates independent control RCWS. (3) activates commander's position. (4) fires the main gun. An M5A4 Victoria with the Upgraded Protection Suite, featuring the Sentry II RCWS, M88 Gunner Optic, and NERA panels. The feature of the Sentry II over the original Sentry is the ability to link it to the control of the gunner. This allows it to function as an additional coaxial machine gun, using the main armament sight instead of busying the commander with employing the weapon. The previous Sentry could do this, but could not function as a separate system if necessary. This variant features an autoloader as well. Upon request, the 12.7mm coaxial was replaced by a 7.62mm weapon for improved anti-personnel efficiency at close ranges. The M88 Gunner Optic is a far superior system to the previous system, providing mulit-spectrum observation capability.