A separate ammunition bustle compartment at the back of the turret adds protection for the crew if tank is hit from behind, and added protection is given by additional slat armor in form of wire mesh with chains, main purpose being to prevent any rocket propelled grenades that might be used to penetrate weakest points at the back of the tank.

Đuro Đaković thermal imaging allows enhanced night activity and optional 1,200 hp (890 kW) engine, which increases the power-to-weight ratio to approximately 27 hp/t.

Meanwhile, the first prototype was upgraded and modernized, a more powerful 1200 hp engine was installed which provided a higher power-to-weight ratio.

The optics and fire control system was developed by Fotona, a Slovenian company, and now comes as standard on all current Croatian and Slovene M-84 tanks.

Rafael - Samson Remote Controlled Weapon Station which consist of a 12.7mm calibre heavy machine gun and 40 mm grenade launcher is another upgrade.