The Object 172M-1 is a prototype Soviet MBT later designated as the T-72A. Despite being a wartime mass production model, the Object 172M-1 presents various technological innovations which its predecessor, the Object 172M (T-72), did not possess. The most important of these are a laser rangefinder, an electronic fire control system, mountings for Explosive Reactive Armour (ERA) and reinforced turret Composite Armour, nicknamed "Dolly Parton" by NATO intelligence for its notably puffy appearance.