FORCETALLY
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At a glance
Measured figures
LMT Modular Ambidextrous Rifle System · Length · "Maximum"
Single source914 mm (36.0 in) ("Maximum")[source]LMT Modular Ambidextrous Rifle System · Length
Configuration
| Specification | LMT Modular Ambidextrous Rifle System | M1 carbine |
|---|---|---|
| Type | Assault rifle Battle rifle[source]LMT Modular Ambidextrous Rifle System · Type | Semi-automatic rifle[source] |
| Place of origin | United States[source]LMT Modular Ambidextrous Rifle System · Place of origin | United States[source] |
| In service | 2015 - present[source]LMT Modular Ambidextrous Rifle System · In service | 1942–1973 (United States) 1942–present (other countries)[source] |
Length
35.6 in (900 mm)[source]
Effective; Effective firing range
Single source330 yd (300 m)[source]
L129A2 exact named variant; not a sibling record · Barrel length
Single sourceStgw 25 exact named variant; not a sibling record · Barrel length
Single sourceStgw 25K exact named variant; not a sibling record · Barrel length
Single source18 in (457 mm)[source]L129A2 exact named variant; not a sibling record
16 in (406 mm)[source]Stgw 25 exact named variant; not a sibling record
12 in (305 mm)[source]Stgw 25K exact named variant; not a sibling record
Barrel length
Single source17.75 in (451 mm)[source]
60–70 aimed rounds/min (M1/A1) M2
Single source60–70 aimed rounds/min (M1/A1) 750 rounds/min (M2)[source]
Muzzle velocity
Single source1,990 ft/s (607 m/s)[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| Designer |
|---|
Lewis Machine & Tool Company[source]LMT Modular Ambidextrous Rifle System · Designer |
Fred Humeston William C. Roemer David Marshall Williams[source] |
| Manufacturer | Lewis Machine & Tool Company[source]LMT Modular Ambidextrous Rifle System · Manufacturer | Military contractors Commercial copies[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 | .30 Carbine[source] |
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| Action | Gas-operated , rotating bolt (internal piston, not direct impingement ) or Short-stroke piston[source]LMT Modular Ambidextrous Rifle System · Action | Gas-operated (short-stroke piston) , rotating bolt[source] |
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| 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 | 15- or 30-round detachable box magazine[source] |
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| Used by | — | See Users[source] |
|---|
| Wars | — | World War II Hukbalahap Rebellion Chinese Civil War (limited) First Indochina War Indonesian National Revolution Korean War Malayan Emergency Second Taiwan Strait Crisis Algerian War Suez Crisis Cuban Revolution Vietnam War Laotian Civil War Bay of Pigs Invasion Permesta Rebellion Indonesia–Malaysia confrontation Ñancahuazú Guerrilla Six-Day War Football War Cambodian Civil War The Troubles Angolan Civil War Black September Lebanese Civil War Insurgency in Aceh Mexican drug war Syrian Civil War[source] |
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| Designed | — | 1941[source] |
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| Unit cost | — | About $45 (WWII) (equivalent to $840 in 2025)[source] |
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| Produced | — | July 1942 – August 1945 (U.S. military) 1945–present (commercial)[source] |
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| No. built | — | 6,121,309 (WWII)[source] |
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| Variants | — | See Variants[source] |
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| Sights | — | Rear sight: aperture; L-type flip or adjustable Front sight: wing-protected post[source] |
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| Reported operators |
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