The M-84 is a Yugoslav second generation main battle tank, a variant of the Soviet T-72. The M-84 is in service in Croatia, Serbia, Bosnia and Herzegovina, Kuwait, and Slovenia. The M-84 is based on the Soviet T-72 but with several modifications, including a domestic fire-control system, improved composite armor, and a 1000-hp engine. The M-84 entered service with the Yugoslav People’s Army in 1984. The improved M-84A version entered service a few years later. There were about 240 Yugoslav factories which directly participated in the production of the M-84 and about 1,000 others which participated indirectly. The main factories were:The latest Serbian version of the M-84 is the M-84AS, unveiled in 2004. It features a new fire control system, Kontakt-5 ERA armor, AT-11 Sniper anti-tank missiles, Agava-2 thermal sight, and the Shtora defensive suite. It is very similar to the Russian T-90S, both in appearance and in capability. About 150 M-84 tanks were exported to Kuwait. The disintegration of Yugoslavia in the 1990s prevented further exports of the M-84.