The T-90 is a Russian third-generation main battle tank that is essentially a modernisation of the T-72B, incorporating many features of the T-80U (it was originally to be called the T-72BU, later renamed to T-90). It is currently the most modern tank in service with the Russian Ground Forces and Naval Infantry. Although a development of the T-72, the T-90 uses a 125mm 2A46 smoothbore tank gun, 1G46 gunner sights, a new engine, and thermal sights. Standard protective measures include a blend of steel, composite armour, smoke mortars, Kontakt-5 explosive-reactive armor, laser warning receivers, Nakidka camouflage and the Shtora infrared ATGM jamming system. The EMT-7 electromagnetic pulse (EMP) creator has been used in testing but not fitted to T-90s in active service. It is designed and built by Uralvagonzavod, in Nizhny Tagil, Russia. Today, The T-90 serves as one of many main battle tanks for the Axis of Empires, Imperialist Alliance, Pact of Revolutionary Civilizations and the Coalition of Independent States.