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At a glance
Measured figures
Barrel length
Single source460 mm[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
Rate of fire
Single source400-450 rounds per minute[source]
Muzzle velocity
Single source400 m/s (1,300 ft/s)[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
Configuration
| Specification | Daewoo Precision Industries USAS-12 | LMT Modular Ambidextrous Rifle System |
|---|---|---|
| Type | Automatic shotgun Semi-automatic (Civilian)[source] | Assault rifle Battle rifle[source]LMT Modular Ambidextrous Rifle System · Type |
| Place of origin | South Korea United States[source] | United States[source]LMT Modular Ambidextrous Rifle System · Place of origin |
| Used by | See Users[source] | — |
| Designer | John Trevor Jr.[source] | Lewis Machine & Tool Company[source]LMT Modular Ambidextrous Rifle System · Designer |
| Designed | 1989[source] | — |
| Manufacturer | Daewoo Precision Industries , Interord Corp. (Nashville, Tennessee), RAMO Defense Co., Ameetec Arms LLC[source] | Lewis Machine & Tool Company[source]LMT Modular Ambidextrous Rifle System · Manufacturer |
| Produced | 1989–present[source] | — |
| No. built | >30,000[source] | — |
| Variants | Semi-automatic only for civilian commercial sales; select-fire for military and police[source] | — |
| Calibre | 12-gauge[source] | — |
| Feed system | 10-round detachable box magazine or 20-round drum magazine[source] | 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 |
| Sights | Iron sights[source] | — |
| In service | — | 2015 - present[source]LMT Modular Ambidextrous Rifle System · In service |
| 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 |
| Action | — | Gas-operated , rotating bolt (internal piston, not direct impingement ) or Short-stroke piston[source]LMT Modular Ambidextrous Rifle System · Action |
| Reported operators |
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