(1) activates turret and coaxial gun. (2) activates commander's position. (3) activates loader and driver's position. (4) fires the 155mm M8 gun. VTOL drives and Yaw steers. Pitch and roll aims. Throttle opens hatches. The latest upgrade to the Ardent M6, this machine features a 155mm M8 coilgun, boasting superior armor-piercing performance to the Korean 132mm KOR-AUT coilgun and the Lanzarrian 145mm SG4 coilgun, while approaching the power of the Teuton 128/70 Kwk. 61 railgun. Derived from the naval M3 152mm coilgun, it was rebored to the 155mm caliber since 155mm is a standard Army and Marine caliber, while 152mm is a standard Navy caliber. In addition to the larger gun, the driver's hatch has been replaced with a lower-profile hatch, the commander's position moved further back to accomodate the larger gun, the loader's hatch is more flush to the vehicle roof, and in the only significant change to the hull, escape hatches have been fitted to the bottom in case the vehicle has overturned or in the case of the driver, the gun or turret obstructs operation of the main hatch. Tankers have been known to use the hatch in reverse, rescuing wounded soldiers under fire. through the hatch.