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At a glance
Measured figures
stock extended
Single sourcestock folded
Single sourceConfiguration
| Specification | Heckler & Koch UMP | LMT Modular Ambidextrous Rifle System |
|---|---|---|
| Type | Submachine gun[source] | Assault rifle Battle rifle[source]LMT Modular Ambidextrous Rifle System · Type |
| Place of origin | Germany[source] | United States[source]LMT Modular Ambidextrous Rifle System · Place of origin |
| In service | 2000–present[source] | 2015 - present[source]LMT Modular Ambidextrous Rifle System · In service |
450 mm (17.7 in) ( stock folded) 690 mm (27.2 in) (stock extended)[source]
LMT Modular Ambidextrous Rifle System · Length · "Maximum"
Single source914 mm (36.0 in) ("Maximum")[source]LMT Modular Ambidextrous Rifle System · Length
UMP40
Single sourceUMP45 · source measurement 2
Single sourceUMP45 · source measurement 5
Single sourceWithout magazine UMP9/UMP40
Single sourceWith unloaded magazine UMP9
Single sourceWithout magazine : 2.3 kg (5.1 lb) ( UMP9/UMP40 ) 2.5 kg (5.5 lb) ( UMP45 ) With unloaded magazine: 2.5 kg (5.5 lb) ( UMP9 ) 2.55 kg (5.6 lb) ( UMP40 ) 2.65 kg (5.8 lb) ( UMP45 )[source]
LMT Modular Ambidextrous Rifle System · Mass · Empty
Single source3.3kg (empty)[source]LMT Modular Ambidextrous Rifle System · Mass
Effective; 45 ACP
Single sourceEffective; 9×
Single source100 m (328 ft) ( 9×19mm Parabellum ) 65 m (213 ft) ( .45 ACP )[source]Source text · numeric interpretation needs review
Barrel length
Single source200 mm (7.9 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 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
40 S&W
Single source45 ACP
Single source9×19mm Parabellum
Single source380 m/s (1,250 ft/s) ( 9×19mm Parabellum ) 358 m/s (1,170 ft/s) ( .40 S&W ) 260 m/s (870 ft/s) ( .45 ACP )[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] | — |
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| Wars | Iraq War[source] | — |
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| Designed | 1990s[source] | — |
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| Manufacturer | Heckler & Koch[source] | Lewis Machine & Tool Company[source]LMT Modular Ambidextrous Rifle System · Manufacturer |
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| Produced | 2000–present[source] | — |
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| Variants | See Variants[source] | — |
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| Cartridge | 9×19mm Parabellum ( UMP9 ) .40 S&W ( UMP40 ) .45 ACP ( UMP45/USC )[source] MEN DM51[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 | Blowback-operated , closed 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 curved box magazine ( UMP9 ) 30-round detachable straight box magazine ( UMP40 ) 25-round detachable straight box magazine ( UMP45 ) 10-round detachable straight box magazine ( USC )[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 | Iron sights and Picatinny rail for various optical sights[source] | — |
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| Role | submachine gun[source] | — |
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| Source measurement | The UMP can be converted between 9×19mm Parabellum, .40 S&W, and .45 ACP by changing the barrel, bolt, and magazine. Although it was previously available in all three calibres, a decline in global use of .40 S&W and .45 ACP has resulted in only the 9mm Parabellum variant remaining in production. However, parts are still available for the .40 S&W and .45 ACP variants.[source]Heckler & Koch UMP · Lead; only the objects and conditions stated in this passage The UMP was originally designed for larger cartridges such as the .40 S&W and .45 ACP , to provide more stopping power against unarmoured targets, with slightly lower effectiveness at longer ranges. A larger cartridge produces more recoil and makes it harder to control in fully automatic fire. To mitigate the excessive recoil, Heckler & Koch designed the UMP to have a cyclic rate of around 600 rounds per minute, though the rate of fire increases up to 700 rounds per minute if (+ P) ammunition is used for the UMP45 and 745 rounds per minute for the UMP40.[source]Heckler & Koch UMP · Design details; only the objects and conditions stated in this passage The UMP9 (the 9×19mm variant of the UMP) is almost 0.2 kg (0.44 lb) lighter than the MP5. It has a cyclic rate of around 600–750 rounds per minute. Its predominantly polymer construction reduces both its weight and the number of parts susceptible to corrosion.[source]Heckler & Koch UMP · Design details; only the objects and conditions stated in this passage The UMP9 , chambered in 9×19mm Parabellum[source]Heckler & Koch UMP · Variants; only the objects and conditions stated in this passage The Heckler & Koch USC or Universal Self-loading Carbine is a semi-automatic-only variant of the UMP designed for civilian use. It was created following the Assault Weapons Ban of 1994 in the United States and was introduced in 2000. Changes from the original UMP include a "thumbhole" type stock/grip instead of the pistol grip of the UMP, a longer barrel without the flash suppressor, a magazine limited to 10 rounds, and a semi-automatic-only trigger group and action. Originally available in grey, as of 2008 the USC came only in an all-black finish.[source]Heckler & Koch UMP · Variants / USC; only the objects and conditions stated in this passage | — |
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| Magazine capacity | 30 Rounds[source] | — |
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| Designer | — | Lewis Machine & Tool Company[source]LMT Modular Ambidextrous Rifle System · Designer |
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| Reported operators | — |
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