LMT Modular Ambidextrous Rifle System vs STK 40 AGL

FORCETALLY

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ASmall arms

LMT Modular Ambidextrous Rifle System

Assault rifle Battle rifle

BSmall arms

STK 40 AGL

Automatic grenade launcher

First system

Second system

At a glance

Side by side

Length comparisonOne shared metre scale

LMT Modular Ambidextrous Rifle SystemLMT Modular Ambidextrous Rifle System · Length · "Maximum"

0.914 m

Length source ↗

STK 40 AGLwith stock

0.966 m

Length source ↗

Lengths retain their source configuration and measurement scope.

Measured figures

Head to head

11 of 45 rows sourced on both sides

914mm

966mmwith stock

LengthScopes differ

All recorded figures & sources

0.914 m

LMT Modular Ambidextrous Rifle System · Length · "Maximum"

Single source

914 mm (36.0 in) ("Maximum")^[source]LMT Modular Ambidextrous Rifle System · Length

Configuration

Details

LMT Modular Ambidextrous Rifle System and STK 40 AGL configuration
Specification	LMT Modular Ambidextrous Rifle System	STK 40 AGL
Type	Assault rifle Battle rifle^[source]LMT Modular Ambidextrous Rifle System · Type	Automatic grenade launcher^[source]
Place of origin	United States^[source]LMT Modular Ambidextrous Rifle System · Place of origin	Singapore^[source]
In service	2015 - present^[source]LMT Modular Ambidextrous Rifle System · In service	1991–present^[source]

Manufacturer	Lewis Machine & Tool Company^[source]LMT Modular Ambidextrous Rifle System · Manufacturer	Chartered Industries of Singapore (former) ST Kinetics (former) ST Engineering^[source]

Cartridge	5.56×45mm NATO 7.62×51mm NATO 6.5mm Creedmoor^[source]LMT Modular Ambidextrous Rifle System · Cartridge The MARS-L (light) assault rifle variants are chambered for the 5.56×45mm NATO intermediate cartridge , and the MARS-H (heavy) battle rifle and designated marksman rifle variants for the 7.62×51mm NATO , 6.5 mm Creedmoor or similar fully powered cartridges .^[source]Design · explicit MARS-L/MARS-H cartridge scope MARS-H based designated marksman variant, chambered in 6.5 mm Creedmoor .^[source]L129A2 · explicit MARS-L/MARS-H cartridge scope Swiss MARS-H-based designated marksman rifle chambered in 7.62×51mm NATO.^[source]7.62mm Zf Stgw 20 · explicit MARS-L/MARS-H cartridge scope LMT's MRGG-A is a member of its Modular Ambidextrous Rifle System-Heavy (MARS-H) family, which are commonly described as AR-10-style rifles, but is chambered to fire the 6.5mm Creedmoor round.^[source]MK24 Mid-Range Gas Gun-Assault · explicit MARS-L/MARS-H cartridge scope	40x53mm grenade^[source]

Cartridge

5.56×45mm NATO 7.62×51mm NATO 6.5mm Creedmoor^[source]LMT Modular Ambidextrous Rifle System · Cartridge

The MARS-L (light) assault rifle variants are chambered for the 5.56×45mm NATO intermediate cartridge , and the MARS-H (heavy) battle rifle and designated marksman rifle variants for the 7.62×51mm NATO , 6.5 mm Creedmoor or similar fully powered cartridges .^[source]Design · explicit MARS-L/MARS-H cartridge scope

MARS-H based designated marksman variant, chambered in 6.5 mm Creedmoor .^[source]L129A2 · explicit MARS-L/MARS-H cartridge scope

Swiss MARS-H-based designated marksman rifle chambered in 7.62×51mm NATO.^[source]7.62mm Zf Stgw 20 · explicit MARS-L/MARS-H cartridge scope

LMT's MRGG-A is a member of its Modular Ambidextrous Rifle System-Heavy (MARS-H) family, which are commonly described as AR-10-style rifles, but is chambered to fire the 6.5mm Creedmoor round.^[source]MK24 Mid-Range Gas Gun-Assault · explicit MARS-L/MARS-H cartridge scope

40x53mm grenade^[source]

Action	Gas-operated , rotating bolt (internal piston, not direct impingement ) or Short-stroke piston^[source]LMT Modular Ambidextrous Rifle System · Action	Blowback operation^[source]

Feed system	5.56×45mm NATO : 30-round detachable box magazine 7.62×51mm NATO 20-round detachable box magazine^[source]LMT Modular Ambidextrous Rifle System · Feed system	Linked belt^[source]

Used by	—	See Users^[source]

Wars	—	Anti-guerrilla operations in the Philippines 2025 Cambodia–Thailand border conflict^[source]

Designed	—	1986-1989^[source]

Produced	—	1991–present^[source]

Sights	—	Folding leaf sight^[source]

Role	—	40 mm automatic grenade launcher ,^[source]

Source measurement	—	The 40AGL was made in 1990, followed by the 40LWAGL in 2001 (previously called the 40 mm Super Light Weight AGL).^[source]STK 40 AGL · History; only the objects and conditions stated in this passage On 19 June 2000, STK announced the release of an upgrade kit, known as the 40mm Automatic Grenade Launcher Air-Bursting System (40mm AGL-ABS), with new electronic fire control system, gun computer, muzzle programming coil, and optical sighting system.^[source]STK 40 AGL · History; only the objects and conditions stated in this passage In September 2013, Thales and ST Kinetics agreed to develop, manufacture and market ST Kinetics' 40mm low-velocity air-bursting ammunition for the Australian and New Zealand markets. ST Kinetics also announced that the company secured a total of more than US$30 million worth of international orders from Canada and United States for its 40mm ammunition in October 2013.^[source]STK 40 AGL · History; only the objects and conditions stated in this passage The 40AGL is mounted in combination with the 12.7-mm 50MG in the ST Kinetics' 40/50 cupola weapon system, installed on the M113 and Bionix. The 40AGL weighs 33 kg without mount or ammunition.^[source]STK 40 AGL · Design; only the objects and conditions stated in this passage The range of 40 mm rounds include low velocity, high velocity, less-than-lethal, camera, self-destruct, airburst and enhanced blast insensitive explosive rounds.^[source]STK 40 AGL · Design; only the objects and conditions stated in this passage In addition to 40mm grenades, it can fire Air-Bursting Munition Systems to increase firepower and lethality.^[source]STK 40 AGL · Design; only the objects and conditions stated in this passage The STK 40 AGL has an almost 6 kg lighter Mark II variant, with a barrel removal system and improved handling, performance, aesthetics and ergonomics. The components, when disassembled, consist of the operating group, barrel, receiver group, top cover group, andtrigger group.^[source]STK 40 AGL · Variants / Mark II; only the objects and conditions stated in this passage Previously called the 40 mm Super Light Weight AGL, the objective of ST Kinetics in designing the 40LWAGL was to keep the grenade launcher's weight to below 20 kg, or half the weight of conventional AGLs.^[source]STK 40 AGL · Variants / 40LWAGL; only the objects and conditions stated in this passage St Kinetics also collaborated with Australia's Metal Storm and Electro Optics System to develop a new high-speed and recoilless 40 mm grenade launcher.^[source]STK 40 AGL · Variants / Redback Lightweight; only the objects and conditions stated in this passage

Source measurement

—

The 40AGL was made in 1990, followed by the 40LWAGL in 2001 (previously called the 40 mm Super Light Weight AGL).^[source]STK 40 AGL · History; only the objects and conditions stated in this passage

On 19 June 2000, STK announced the release of an upgrade kit, known as the 40mm Automatic Grenade Launcher Air-Bursting System (40mm AGL-ABS), with new electronic fire control system, gun computer, muzzle programming coil, and optical sighting system.^[source]STK 40 AGL · History; only the objects and conditions stated in this passage

In September 2013, Thales and ST Kinetics agreed to develop, manufacture and market ST Kinetics' 40mm low-velocity air-bursting ammunition for the Australian and New Zealand markets. ST Kinetics also announced that the company secured a total of more than US$30 million worth of international orders from Canada and United States for its 40mm ammunition in October 2013.^[source]STK 40 AGL · History; only the objects and conditions stated in this passage

The 40AGL is mounted in combination with the 12.7-mm 50MG in the ST Kinetics' 40/50 cupola weapon system, installed on the M113 and Bionix. The 40AGL weighs 33 kg without mount or ammunition.^[source]STK 40 AGL · Design; only the objects and conditions stated in this passage

The range of 40 mm rounds include low velocity, high velocity, less-than-lethal, camera, self-destruct, airburst and enhanced blast insensitive explosive rounds.^[source]STK 40 AGL · Design; only the objects and conditions stated in this passage

In addition to 40mm grenades, it can fire Air-Bursting Munition Systems to increase firepower and lethality.^[source]STK 40 AGL · Design; only the objects and conditions stated in this passage

The STK 40 AGL has an almost 6 kg lighter Mark II variant, with a barrel removal system and improved handling, performance, aesthetics and ergonomics. The components, when disassembled, consist of the operating group, barrel, receiver group, top cover group, andtrigger group.^[source]STK 40 AGL · Variants / Mark II; only the objects and conditions stated in this passage

Previously called the 40 mm Super Light Weight AGL, the objective of ST Kinetics in designing the 40LWAGL was to keep the grenade launcher's weight to below 20 kg, or half the weight of conventional AGLs.^[source]STK 40 AGL · Variants / 40LWAGL; only the objects and conditions stated in this passage

St Kinetics also collaborated with Australia's Metal Storm and Electro Optics System to develop a new high-speed and recoilless 40 mm grenade launcher.^[source]STK 40 AGL · Variants / Redback Lightweight; only the objects and conditions stated in this passage

Country of origin	—	Singapore^[source]Inventory Origin column; table 8, row 40, cell 3; revision 1377789308; retrieved 2026-10-01

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