The M-84AS is a modernized version of the M-84 main battle tank produced by Yugoimport SDPR in Serbia. M-84AS is sometimes referred to as M-84AB1 and M-2001.
The modernization gives an improved fire-control system with integrated day/night sight. The M84A1 gun is replaced with a similar but improved gun which, along with better control characteristics, enables easy and fast field replacement of the barrel. The M-84AS tank is able to fire anti-tank guided missiles with laser guidance through the barrel, which enables accurate engagement of enemy tanks up to 5 km.
The M-84AS is equipped with non-explosive and non-energetic reactive armour (NERA) which offers protection against modern tandem charge warheads on missiles. It is also equipped with the modern Shtora electro-optical system for defense against wire and laser guided anti-tank missiles. The new turret will provide protection against Kinetic Energy (RHAe) anti-tank guided missiles. Its new 9M119 Refleks is a laser beam riding guided anti-tank missile designed to penetrate 950 mm of RHA.