Munitions

PM120 precision guided mortar bomb

Also known as
  • PM120
  • PM120 PG MB
  • PM120 PGMB
  • PM120 GPS-guided mortar bomb
  • Precision Guided 120 mm Mortar Bomb
  • Precision Guided 120mm Mortar Bomb

PM120 is ST Engineering's Singapore-made 120 mm GPS-guided precision mortar bomb for smoothbore mortar systems. Janes placed it in the SRAMS Mk II ammunition suite, while later ST Engineering and DefenceWeb material tie the Precision Guided 120 mm Mortar Bomb to GDAMS and TAC-6 demonstration context.

PM120 precision guided mortar bomb, 120 mm GPS-guided precision mortar bomb, Munitions
Image source: Mortar Bombs
Profile / Specs

Profile

Origin
Singapore
Type
120 mm GPS-guided precision mortar bomb
Service note
Late 2010s-present
Designer
ST Engineering Land Systems
Designed
Reported in 2019
Produced
Late 2010s-present

Specifications

Caliber
120 mm
Guidance
GPS
Maximum range
Up to 8.5 km
CEP
About 10 m
Warhead
2.8 kg TNT
Compatibility
Smoothbore mortar systems
Variants

Public sources place PM120 inside ST Engineering's 120 mm smooth-bore/SRAMS ammunition family, alongside unguided extended-range and screening rounds rather than as a standalone conflict-backed weapon system.

VariantConfigurationDesignation notes
Extended Range High Explosive, 120 mm high-explosive mortar round for smoothbore mortar systems, MunitionsExtended Range High Explosive120 mm extended-range high-explosive mortar round

Janes names Extended Range High Explosive in the same SRAMS Mk II ammunition suite; it is the high-explosive sibling rather than the GPS-guided precision round.

Sources: IDEX 2018: Singapore's ST Engineering launches SRAMS 120 mm Mk II

120 mm ER Infra-Red Red Phosphorous, 120 mm extended-range smoke mortar round, Munitions120 mm ER Infra-Red Red Phosphorous120 mm extended-range infrared smoke mortar round

Janes names ER Infra-Red Red Phosphorous in the SRAMS Mk II ammunition suite; ST Engineering's mortar-bombs page describes the ER family as smooth-bore compatible.

Sources: IDEX 2018: Singapore's ST Engineering launches SRAMS 120 mm Mk II, Mortar Bombs

ER Illuminating120 mm illuminating mortar round

Janes also lists ER Illuminating in the same ST Engineering 120 mm ammunition-suite context, but no separate catalog record is linked here.

Sources: IDEX 2018: Singapore's ST Engineering launches SRAMS 120 mm Mk II

Firing Systems

Janes places PM120 in ST Engineering's SRAMS Mk II ammunition suite for smoothbore mortar systems. Later ST Engineering material names the Precision Guided 120 mm Mortar Bomb in GDAMS compatibility context.

Compatible itemItem typeCompatibility evidence
Agrab 120 mm mortar system, Wheeled self-propelled 120 mm mortar carrier, ArtilleryAgrab 120 mm mortar systemWheeled self-propelled 120 mm mortar carrier

The Agrab is a vehicle-mounted SRAMS mortar carrier, and Janes names PM120 in ST Engineering's SRAMS Mk II ammunition suite designed for smoothbore mortar systems.

Sources: IDEX 2018: Singapore's ST Engineering launches SRAMS 120 mm Mk II, Agrab mobile mortar overview

Ground Deployed Advanced Mortar System (GDAMS), Vehicle-mounted 81 mm and 120 mm advanced mortar system, ArtilleryGround Deployed Advanced Mortar System (GDAMS)Vehicle-mounted 81 mm and 120 mm mortar system

ST Engineering's GDAMS brochure lists compatibility with the Precision Guided 120 mm Mortar Bomb, and DefenceWeb reported a TAC-6/GDAMS demonstration of PM120 GPS-guided ammunition.

Sources: GDAMS brochure, Armormax Defence and ST Engineering demo mortar-mounted TAC-6 vehicle

Guidance And Evidence Scope

PM120 is documented as a precision round inside ST Engineering's 120 mm mortar ecosystem, but the public evidence used here supports product, compatibility, and demonstration context rather than named-conflict use of the exact munition.

TopicSource-backed detailCatalog treatment
Precision roleJanes reports PM120 as GPS guided with about 10 m CEP, up to 8.5 km range, and a 2.8 kg TNT warhead.The type, specs, and tags identify it as a GPS-guided precision mortar bomb.
Ammunition familyJanes lists PM120 with ER HE, ER IR RP, and ER Illuminating in ST Engineering's SRAMS Mk II ammunition suite for smoothbore mortars.The variant section links the existing sibling ammunition pages and leaves ER Illuminating unlinked until a dedicated record is needed.
Launcher contextST Engineering and Babcock describe GDAMS as a vehicle-mounted mortar system compatible with 120 mm ammunition, while the GDAMS brochure names the Precision Guided 120 mm Mortar Bomb.The relationship section links GDAMS and the existing Agrab SRAMS carrier without implying PM120 conflict use from either launcher.
Demonstration evidenceDefenceWeb reported a 2025 TAC-6/GDAMS demonstration in South Africa where PM120 GPS-guided precision ammunition was demonstrated after conventional mortar rounds.The timeline records the demonstration as product evidence, not operational employment.
Conflict-use limitSources checked for Yemen, Ukraine, UAE/Agrab, TAC-6/GDAMS, official ST Engineering pages, and specialist mortar reporting did not directly document PM120 use in a named armed conflict.The record remains relationship-only with empty conflict fields until a direct conflict-use source identifies PM120 itself.

Sources: IDEX 2018: Singapore's ST Engineering launches SRAMS 120 mm Mk II; Mortar Bombs; 120mm Super Rapid Advanced Mortar System (SRAMS); GDAMS brochure; Ground Deployed Advanced Mortar System - Babcock International Group; Armormax Defence and ST Engineering demo mortar-mounted TAC-6 vehicle.

Timeline

PM120 precision guided mortar bomb Key Events

  1. PM120 reported in SRAMS Mk II ammunition suite

    Janes reported PM120 as ST Engineering's GPS-guided 120 mm precision mortar bomb in the SRAMS Mk II ammunition suite, alongside ER HE, ER IR RP, and ER Illuminating rounds.

    Sources: IDEX 2018: Singapore's ST Engineering launches SRAMS 120 mm Mk II

  2. GDAMS brochure lists Precision Guided 120 mm Mortar Bomb compatibility

    ST Engineering's GDAMS brochure listed compatibility with 81 mm and 120 mm ammunition, including precision-guided rounds and the Precision Guided 120 mm Mortar Bomb.

    Sources: GDAMS brochure

  3. PM120 demonstrated with TAC-6/GDAMS in South Africa

    DefenceWeb reported that ST Engineering and Armormax demonstrated conventional GDAMS mortar rounds and a PM120 GPS-guided precision round at Armscor's Alkantpan range.

    Sources: Armormax Defence and ST Engineering demo mortar-mounted TAC-6 vehicle

Media

PM120 precision guided mortar bomb Images

PM120 precision guided mortar bomb, 120 mm GPS-guided precision mortar bomb, Munitions - view 1
Source: Mortar Bombs
Related Weapon Systems
Mortar bombs, 120mm, Heavy mortar ammunition, MunitionsMunitionsMortar bombs, 120mmHeavy mortar ammunition120 mm mortar bombs are fin-stabilized heavy mortar projectiles for compatible 120 mm mortar launchers, covering high-explosive, smoke, illumination, training, extended-range, and guided families. Published examples vary sharply by manufacturer and launcher qualification: conventional HE rounds commonly list 13-16 kg class masses, product-specific explosive fillings, point-detonating or proximity fuzes, and range limits tied to barrel length, pressure limits, smoothbore qualification, or turreted-system requirements. In the Boko Haram insurgency, Nigerian Army reporting documented recovered 120 mm mortar bombs as insurgent materiel rather than confirmed firing use.

Sources

IDEX 2018: Singapore's ST Engineering launches SRAMS 120 mm Mk IIPublisher: Janes | Note: Supports the exact PM120 designation, SRAMS Mk II ammunition-suite context, GPS guidance, 8.5 km range, 10 m CEP, and 2.8 kg TNT warhead. | Accessed: 2026-07-01Mortar BombsPublisher: ST Engineering | Note: Supports manufacturer background and the official page image used for this record. | Accessed: 2026-07-01120mm Super Rapid Advanced Mortar System (SRAMS)Publisher: ST Engineering | Note: Supports SRAMS Mk II launcher context and the official SRAMS image used in the gallery. | Accessed: 2026-07-01Agrab mobile mortar overviewPublisher: Military Periscope | Note: Supports the Agrab SRAMS mortar-carrier background used to ground the reciprocal compatibility link. | Accessed: 2026-07-01GDAMS brochurePublisher: ST Engineering | Note: Supports GDAMS compatibility context for the Precision Guided 120 mm Mortar Bomb and related 81 mm and 120 mm ammunition compatibility. | Accessed: 2026-07-01Ground Deployed Advanced Mortar System - Babcock International GroupPublisher: Babcock International Group | Note: Supports GDAMS launcher context, including collaboration with ST Engineering, vehicle-agnostic mounting, 15-second deployment and stowage, and smoothbore ammunition compatibility. | Accessed: 2026-07-01Armormax Defence and ST Engineering demo mortar-mounted TAC-6 vehiclePublisher: DefenceWeb | Note: Supports 2025 TAC-6/GDAMS demonstration context: PM120 GPS-guided precision ammunition was carried and demonstrated with the GDAMS mortar system at Armscor's Alkantpan range. | Accessed: 2026-07-01