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BSmall arms
Semi-automatic rifle (civilian versions) Assault rifle (SIG516) Battle rifle (SIG716)
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 | SIG Sauer SIG516 |
|---|---|---|
| Type | Assault rifle Battle rifle[source]LMT Modular Ambidextrous Rifle System · Type | Semi-automatic rifle (civilian versions) Assault rifle (SIG516) Battle rifle (SIG716)[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 | 2010–present[source] |
406 mm barrel
Single source920–947 mm (36.22–37.28 in) 406 mm barrel[source]
Effective; Effective firing range
Single source500 m (550 yd)[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 source406 mm (16.0 in)[source]
406 mm barrel
Single source850 m/s (2,789 ft/s) 406 mm barrel[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 | — |
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| Manufacturer | Lewis Machine & Tool Company[source]LMT Modular Ambidextrous Rifle System · Manufacturer | SIG Sauer[source] |
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| 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 | 5.56×45mm NATO (SIG516) 7.62×39mm (SIG516) 7.62×51mm NATO (SIG716) 6.5mm Creedmoor (SIG716)[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 | 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 | 10, 20, 30-round detachable magazine[source] |
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| Used by | — | See Users[source] |
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| Wars | — | Kurdish-Turkish conflict Russian invasion of Ukraine[source] |
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| Designed | — | 2000s[source] |
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| Produced | — | 2010–2019 2025–present (SIG516 G3)[source] |
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| Variants | — | SIG716[source] |
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| Rate of fire | — | 750-950 rounds/minute[source] |
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| Sights | — | Iron sights or picatinny rail for various optics[source] |
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| Reported operators |
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