120 mm ER Infra-Red Red Phosphorous

ST Engineering's ER Infra-Red Red Phosphorous (IR RP) is a 120 mm extended-range smoke mortar round for smooth-bore mortar systems. Manufacturer material says it gives visual, infrared, and laser-spectrum screening, is compatible with all smooth-bore mortar systems including vehicle-mounted launchers, and reaches up to 9 km.

120 mm ER Infra-Red Red Phosphorous, 120 mm extended-range smoke mortar round, Munitions

Image source: Mortar Bombs

Profile

Origin: Singapore
Built by: ST Engineering Land Systems
Type: 120 mm extended-range smoke mortar round
Service note: 2010s-present
Designer: ST Engineering Land Systems
Produced: 2010s-present

mortar smoke obscurantinfrared

Specifications

Caliber: 120 mm
Role: Extended-range smoke and obscurant round
Range: 650 m to 9,000 m
Weight: 14.8 kg
Length: 807 mm
Payload: 3 smoke canisters
Muzzle velocity: 408 m/s
Compatibility: All smooth-bore mortar systems, including vehicle-mounted systems
Fuze: MTSQ DM93

Service And Conflict Use

Service History

In service: Current ST Engineering 120 mm ER mortar-bomb line for smooth-bore mortar systems.

Compatible Mortar System

ST Engineering says this ER mortar-bomb line is compatible with all smooth-bore mortar systems, including vehicle-mounted systems.

Compatible item

Item type

Compatibility evidence

Agrab 120 mm mortar system

120 mm mortar carrier

ST Engineering says the ER mortar-bomb line is compatible with all smooth-bore mortar systems, including vehicle-mounted systems.

Sources: Mortar Bombs

120 mm ER Infra-Red Red Phosphorous Images

120 mm ER Infra-Red Red Phosphorous, 120 mm extended-range smoke mortar round, Munitions - view 1 — Source: Mortar Bombs

120 mm ER Infra-Red Red Phosphorous, 120 mm extended-range smoke mortar round, Munitions - view 2 — Source: Mortar Bombs

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Sources

120mm Extended Range Mortar SpecificationsPublisher: ST Engineering | Note: Supports manufacturer background and the ER mortar-bomb specifications, including the ER Infra-Red Red Phosphorous designation, range, mass, fill, fuze, compatibility, and the brochure's technical data table. | Accessed: 2026-06-23 Mortar BombsPublisher: ST Engineering | Note: Supports manufacturer background, the 120 mm ER mortar-bomb family, compatibility with smooth-bore mortar systems, and the official page image used for this record. | Accessed: 2026-06-23 120mm Super Rapid Advanced Mortar System (SRAMS)Publisher: ST Engineering | Note: Supports the SRAMS launcher context, vehicle-mounted integration, and the official SRAMS image used in the gallery. | Accessed: 2026-06-23 IDEX 2018: Singapore's ST Engineering launches SRAMS 120 mm Mk IIPublisher: Janes | Note: Supports the exact ER Infra-Red Red Phosphorous (IR RP) designation and the SRAMS Mk II ammunition-suite naming. | Accessed: 2026-06-23