In addition, another 1,000 rounds can be stored separately. The secondary armament consists of a 12.7 mm Kord ( GRAU index 6P49) machine gun with 300 rounds (not observed during the parade) and a 7.62 mm PKTM (6P7К) machine gun with 1,000 rounds. The cannon also has ability to fire guided missiles, a feature first implemented on Soviet tanks, with a new 3UBK21 Sprinter ATGM developed specifically for it. The new controlled-detonation Telnik HE-Frag shell is also available. The Vacuum-1 sabot round which is currently being developed for the 2A82-1M cannon has a penetrator which is 900 mm long, and is capable of penetrating 1,000 mm of RHA equivalent at a distance of 2,000 meters.

The laser rangefinder has a theoretical maximum range of 7.5 km. The gunner sight's optical channel is equipped with 4x and 12x optical zoom. The detection range of the tank's optical sensors is ~5 km for tank-sized targets at day, and 3.5 km at night through the thermal imaging channel. Noteworthy features include an absence of a fume extractor (due to the unmanned turret), a firing rate of 10–12 rounds per minute, and a maximum effective-penetration range of 8 km. The main armament of the T-14 is the 2A82-1M 125 mm (4.92 in) smoothbore cannon, a new replacement for the 2A46 of previous Russian and Soviet tanks. The development of the tank took five years and was initiated after the earlier, incrementally innovative, T-95 (object 195) project was cancelled, after protracted development, with authorities citing excessive weight, complexity, and cost. The most significant new feature is the use of an unmanned turret, with the crew of three seated in an armored capsule in the front of the hull. Featuring a number of innovative characteristics, the T-14 represents a new generation of Russian main battle tanks.

Russian main battle tank t-14 armata