Credit
Doxlulzem (photo) Sumek101 (photo editing ) · CC BY-SA 4.0 · Resized · CC BY-SA 4.0 · Source ↗ · Modified
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At a glance
Measured figures
Grot B
Single sourceGrot C, stock extended
Single sourceConfiguration
| Specification | FB MSBS Grot | LMT Modular Ambidextrous Rifle System |
|---|---|---|
| Type | Assault rifle (MSBS Grot C) Bullpup assault rifle (MSBS Grot B)[source] | Assault rifle Battle rifle[source]LMT Modular Ambidextrous Rifle System · Type |
| Place of origin | Poland[source] | United States[source]LMT Modular Ambidextrous Rifle System · Place of origin |
| Used by | See Users[source] | — |
| Wars | Russo-Ukrainian War Russian invasion of Ukraine M23 campaign[source] | — |
980 mm (39 in) (Grot C, stock extended) 720 mm (28 in) (Grot B)[source]
LMT Modular Ambidextrous Rifle System · Length · "Maximum"
Single source914 mm (36.0 in) ("Maximum")[source]LMT Modular Ambidextrous Rifle System · Length
Effective; Effective firing range
Single source500–800 m (547–875 yd)[source]
Barrel length · source measurement 1
Single sourceBarrel length · source measurement 2
Single sourceBarrel length · source measurement 3
Single sourceGrot S · source measurement 4
Single sourceGrot S · source measurement 5
Single source254 mm (10.0 in) 406 mm (16.0 in) 508 mm (20.0 in) 267 mm (10.5 in) (Grot S) 368 mm (14.5 in) (Grot S)[source]
L129A2 exact named variant; not a sibling record · Barrel length
Single sourceStgw 25 exact named variant; not a sibling record · Barrel length
Single sourceRate of fire
Single source700–900 rounds/min[source]
Muzzle velocity
Single source890 m/s (2,900 ft/s)[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| Designer | Adam Gawron, Bartosz Stefaniak, Grzegorz Misiołek, Maciej Sajdak[source] | Lewis Machine & Tool Company[source]LMT Modular Ambidextrous Rifle System · Designer |
|---|
| Designed | 2007[source] | — |
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| Manufacturer | FB "Łucznik" Radom[source] | Lewis Machine & Tool Company[source]LMT Modular Ambidextrous Rifle System · Manufacturer |
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| Produced | 2007–2017 (prototypes) 2018–present[source] | — |
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| Variants | See Variants[source] | — |
|---|
| Cartridge | 5.56×45mm NATO 7.62×39mm[source] | 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 |
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| Action | Short-stroke gas piston , rotating bolt[source] | Gas-operated , rotating bolt (internal piston, not direct impingement ) or Short-stroke piston[source]LMT Modular Ambidextrous Rifle System · Action |
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| Feed system | 30-round detachable 5.56×45mm NATO and 7.62×39mm STANAG box magazines , 60-round casket 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 |
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| Sights | Integrated Picatinny rail for various optical sights and Picatinny attachable iron sights[source] | — |
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| In service | — | 2015 - present[source]LMT Modular Ambidextrous Rifle System · In service |
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| Reported operators |
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Stgw 25K exact named variant; not a sibling record · Barrel length
Single source