T-90S armament
The T-90S armament includes one 125mm 2A46M smoothbore gun, stabilised in two axes and fitted with a thermal sleeve. The gun tube can be replaced without dismantling inside the turret. The gun can fire a variety of ammunition including APDS (Armour Piercing Discarding Sabot), HEAT (high-explosive anti-tank), HE-FRAG (high-explosive fragmentation) as well as shrapnel projectiles with time fuses.