IN Brief:
- Saab’s HEAT 758 round is designed to defeat heavy armour fitted with explosive reactive armour.
- The munition uses a tandem warhead and can penetrate up to 700mm of armour.
- Production is underway, linking anti-armour lessons from modern battlefields to munitions manufacturing demand.
Saab has launched HEAT 758, a new anti-tank round for the Carl-Gustaf weapon system designed to defeat heavy armoured vehicles fitted with explosive reactive armour.
Introduced during a live-firing customer demonstration at Karlskoga, Sweden, the round is already in production for an undisclosed Carl-Gustaf customer. That places the munition beyond the concept stage and into an active manufacturing stream. HEAT 758 uses a tandem warhead, with a precursor charge intended to defeat the explosive reactive armour layer before the main charge penetrates the vehicle’s primary armour. Saab lists penetration at up to 700mm of armour.
Explosive reactive armour has become a standard feature on many modern armoured vehicles. ERA tiles are designed to disrupt incoming shaped-charge jets by detonating outward or sideways as the munition strikes, reducing penetration before the main armour is reached. For munition designers, that defensive layer changes the entire geometry and timing of the attack. A single shaped charge that may be effective against older armour arrays can lose much of its effect when it strikes ERA first.
Tandem warheads solve that problem through sequencing. The first charge initiates or neutralises the reactive armour, while the second charge follows with the main penetrating jet. Compressing that sequence into a shoulder-fired recoilless weapon round demands precise control of charge spacing, fuze timing, liner geometry, explosive fill, safety features, and structural packaging. A small error in alignment or timing can reduce penetration dramatically.
HEAT 758 also uses Saab’s Firebolt technology, allowing communication between the round, the Carl-Gustaf M4 launcher, and the Fire Control Device 558. That gives the munition a digital layer alongside its energetic function. Modern shoulder-fired weapons increasingly use fire-control data, range inputs, round recognition, and sighting correction to improve first-round hit probability and reduce operator workload under pressure.
The production task is therefore broader than filling a metal body with explosive material. The round has to bring together precision energetic manufacturing, fuze electronics, launcher communication, compatibility testing, environmental safety, storage stability, and rugged handling performance. As anti-armour ammunition becomes more closely linked with fire-control systems, the boundary between ammunition production and electronics integration continues to narrow.
Demand for such systems has been sharpened by the return of high-intensity land warfare. Armoured vehicles remain vulnerable to portable guided missiles, loitering munitions, mines, artillery, drones, and shoulder-fired weapons, but they also continue to adapt through ERA, cages, soft-kill protection, active protection systems, signature reduction, and tactical dispersion. That cycle creates constant pressure on munition manufacturers to increase lethality without making weapons too heavy, too expensive, or too complex for dismounted forces.
The Carl-Gustaf system remains attractive because it is reusable, portable, widely fielded, and supported by a broad ammunition family. Users can employ rounds for anti-armour, anti-structure, illumination, smoke, and anti-personnel roles, allowing one launcher type to cover multiple battlefield tasks. A new ERA-defeating round preserves that flexibility while extending relevance against more heavily protected vehicles.
For customers with existing Carl-Gustaf inventories, the route to improved capability is comparatively direct. They can upgrade lethality through new ammunition rather than replacing the launcher ecosystem. That creates a different industrial rhythm from platform procurement. Instead of waiting for a new weapon system, armies can improve existing stocks through ammunition production, qualification, training updates, and fire-control integration.
European demand for munitions has expanded far beyond peacetime assumptions, from 155mm artillery and air defence interceptors to anti-armour weapons, guided rockets, and deep-strike systems. IN Defence recently covered Rheinmetall’s push into cruise missile production with Destinus, a higher-end example of the same industrial pressure. HEAT 758 sits in the tactical layer, but the production questions are familiar: energetic materials, skilled labour, test capacity, inspection, delivery schedules, and stockpile replenishment.
The round also reflects a wider trend towards extending mature systems through smarter ammunition. Rather than replacing every launcher, mortar, artillery piece, or missile rail, armed forces are seeking munitions with improved fuzing, better penetration, programmable effects, reduced signature, or more effective fire-control compatibility. That approach can deliver capability quickly where the launcher base is already established.
Manufacturing quality will drive performance. Tandem-warhead production requires tight process control across liner shaping, charge placement, explosive fill, fuze behaviour, and final inspection. Storage conditions and transport handling also have to preserve the internal geometry that makes the round effective. Once digital communication is added, electrical reliability and software compatibility become part of the ammunition qualification process.
HEAT 758 gives Saab’s Carl-Gustaf system a stronger answer to ERA-protected armour while keeping the launcher within a familiar operating model. For land forces and defence manufacturers alike, it shows how much technical development is now being packed into the ammunition line rather than the launcher alone.