The main armament of the T-14 is the 2A82-1M 125 mm (4.92 in) smoothbore cannon, a replacement for the 2A46 of previous Russian and Soviet tanks. Its muzzle energy is greater than one of the world’s previously considered best cannons: the German Leopard 2 Rheinmetall 120 mm gun. The 125 mm gun has 15-20 percent improved accuracy and its rolling fire angular dispersion has improved 1.7 times. Features include an absence of a fume extractor (due to the unmanned turret), a firing rate of 10–12 rounds per minute, left side casing ejection port for the 125mm gun and a maximum effective-penetration range of 8 km with ATGMs. The detection range of the tank’s optical sensors is more than 5 km for tank-sized targets in daylight, and at least 3.5 km at night through the thermal imaging channel. The gunner sight’s optical channel is equipped with 4× and 12× optical zoom. The laser rangefinder has a theoretical maximum range of 7.5 km. These systems are duplicated; in addition there is a weaker third system that can fire on the move. The crew uses a high-definition camera with a 360-degree field.