Russian T-90A main armament is the 2A46M 125 mm smoothbore tank gun. This is a highly modified version of the Sprut anti-tank gun, and is the same gun used as the main armament on the T-80-series tanks. It can be replaced without dismantling the inner turret and is capable of firing armour-piercing fin-stabilized discarding sabot , high-explosive anti-tank, and high explosive fragmentation ammunition, as well as 9M119M Refleks anti-tank guided missiles.