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At a glance
Measured figures
HK33A2
Single sourceHK33A3 stock collapsed
Single sourceConfiguration
| Specification | Heckler & Koch HK33 | LMT Modular Ambidextrous Rifle System |
|---|---|---|
| Type | Assault rifle[source] | Assault rifle Battle rifle[source]LMT Modular Ambidextrous Rifle System · Type |
| Place of origin | West Germany[source] | United States[source]LMT Modular Ambidextrous Rifle System · Place of origin |
| In service | 1968–present[source] | 2015 - present[source]LMT Modular Ambidextrous Rifle System · In service |
HK33A3 stock extended /
Single sourceHK33KA3 stock collapsed
Single sourceHK33KA3 stock extended /
Single sourceHK53 stock collapsed
Single sourceHK53 stock extended /
Single sourceHK33A2: 920 mm (36.2 in) HK33A3: 940 mm (37.0 in) stock extended / 735 mm (28.9 in) stock collapsed HK33KA3: 865 mm (34.1 in) stock extended / 675 mm (26.6 in) stock collapsed HK53: 755 mm (29.7 in) stock extended / 563 mm (22.2 in) stock collapsed[source]
LMT Modular Ambidextrous Rifle System · Length · "Maximum"
Single source914 mm (36.0 in) ("Maximum")[source]LMT Modular Ambidextrous Rifle System · Length
HK33A2
Single sourceHK33A3
Single sourceHK33KA3
Single sourceHK53
Single sourceHK33A2: 3.65 kg (8.05 lb) HK33A3: 4.0 kg (8.8 lb) HK33KA3: 3.9 kg (8.6 lb) HK53: 3.05 kg (6.7 lb)[source]
LMT Modular Ambidextrous Rifle System · Mass · Empty
Single source3.3kg (empty)[source]LMT Modular Ambidextrous Rifle System · Mass
Effective; sight adjustments
Single sourceEffective; with Fero Z24-G telescopic sight
Single source200–400 m (219–437 yd) sight adjustments 600 metres (656 yd) with Fero Z24-G telescopic sight[source]
HK33A2
Single sourceHK33KA3
Single sourceHK53
Single sourceHK33A2: 390 mm (15.4 in) HK33KA3: 332 mm (13.1 in) HK53: 211 mm (8.3 in)[source]
L129A2 exact named variant; not a sibling record · Barrel length
Single sourceStgw 25 exact named variant; not a sibling record · Barrel length
Single sourceHK33A2
Single sourceHK53
Single sourceHK33A2: 750 rounds/min HK53: 700 rounds/min[source]
HK33A2
Single sourceHK33KA3
Single sourceHK53
Single sourceHK33A2: 950 m/s (3,117 ft/s) HK33KA3: 880 m/s (2,887.1 ft/s) HK53: 750 m/s (2,460.6 ft/s)[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| Used by |
|---|
See Users[source] |
| — |
| Wars | Vietnam War Araguaia Guerrilla War Salvadoran Civil War Lebanese Civil War Kurdish–Turkish conflict Internal conflict in Myanmar Cenepa War South Thailand insurgency Insurgency in Northeast India Militias-Comando Vermelho conflict 2025 Cambodia-Thailand border conflict[source] | — |
|---|
| Manufacturer | Heckler & Koch , MKEK (licensed)[source] | Lewis Machine & Tool Company[source]LMT Modular Ambidextrous Rifle System · Manufacturer |
|---|
| Produced | 1968—2000 (H&K) 1999—present (MKEK)[source] | — |
|---|
| Variants | See Variants[source] | — |
|---|
| Cartridge | .223 Remington 5.56×45mm NATO[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 | Roller-delayed blowback[source] | Gas-operated , rotating bolt (internal piston, not direct impingement ) or Short-stroke piston[source]LMT Modular Ambidextrous Rifle System · Action |
|---|
| Feed system | 25-, 30-, or 40-round detachable box 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 | Rotary rear aperture drum, hooded foresight[source] | — |
|---|
| Designer | — | Lewis Machine & Tool Company[source]LMT Modular Ambidextrous Rifle System · Designer |
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| Reported operators |
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Stgw 25K exact named variant; not a sibling record · Barrel length
Single source