OVERVIEW: 125mm HEAT-FRAG (High-Explosive Anti-Tank – Fragmentation) ammunition is a dual-purpose munition designed to penetrate armored targets while also delivering lethal fragmentation effects against infantry and soft targets. It provides a versatile option for engaging mixed threats in complex battlefield environments.

DETAILS: This round incorporates a shaped charge warhead for armor penetration, combined with a fragmentation casing designed to disperse lethal fragments upon detonation. The warhead is capable of defeating light to medium armored vehicles, while the fragmentation sleeve enhances anti-personnel and anti-material effects. Some variants feature dual fuzing options (impact or delay) and may include a tracer element for improved targeting. While not as effective as dedicated APFSDS rounds against heavily armored tanks, HEAT-FRAG ammunition offers broader tactical utility in combined arms operations.

ROLE SUMMARY:
Category: Tank Gun Ammunition
Primary Use: Anti-armor / Anti-personnel
Function: Shaped charge penetration with secondary fragmentation
Strong Against: Light and medium armored vehicles, infantry, field fortifications, unarmored vehicles
Weak Against: Heavily armored main battle tanks, active protection systems, deeply entrenched positions
Platform: MBTs with 125mm smoothbore guns
Integration: Compatible with 2A46, 2A46M, and 2A82 series tank guns

SOURCE:
Janes Ammunition Handbook
https://en.wikipedia.org/wiki/125_mm_smoothbore_ammunition