Light machine gun
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A light machine gun (LMG) is a machine gun designed to be employed by an individual soldier, with or without an assistant, as an infantry support weapon. Light machine guns are often used as squad automatic weapons.
While early light machine guns fired full calibre service ammunition, modern light machine guns often fire smaller-calibre cartridges than medium machine guns, and are usually lighter and more compact. Some LMGs, such as the Russian RPK, are modifications of existing designs and designed to share the same ammunition. Adaptations to the original rifle generally include a larger magazine, a heavier barrel to resist overheating, a more robust mechanism to support sustained fire and a bipod.
A light machine gun is also defined by its usage as well as its specifications: some machine guns - notably general-purpose machine guns - may be deployed either as a light machine gun or a medium machine gun. Deployed on a tripod and used for sustained-fire it is a medium machine gun; if deployed with a bipod with the operator in prone position and firing short bursts it is a light machine gun.
Light machine guns are also designed to be fired from the hip or on the move as a form of suppressive fire intended to pin down the enemy. Marching fire is a specific tactic that relies on this capability.
Lighter modern LMGs have enabled them to be issued down at the fireteam level, with two or three at the section/squad level.
Many light machine guns (such as the Bren gun or the M1918 Browning Automatic Rifle) were magazine-fed. Others, such as the MG 34, could be fed either from a belt or from a magazine. Modern light machine guns are designed to fire more rounds of a smaller caliber and, as such, tend to be belt-fed from a detachable box magazine, some such as the FN Minimi will also accept rifle magazine feeding as an auxiliary measure when belted ammunition has been exhausted.
In 1903, French military theorists noticed that the heavy machine guns of the day were of little use in infantry assaults. They determined that "the machine gun must learn to walk". They researched the possibility of a light machine gun which could be carried by troops. A marching fire tactic was theorised, using incidental suppressive fire, with the advancing troops considered a deadlier threat than the un-aimed bullets, causing the enemy to fall back. The prototype guns were not approved for production, and none were in service when World War I began. The French quickly brought the prototypes to mass production to boost the firepower of advancing infantry.
By the end of World War II, light machine guns were usually being issued on a scale of one per fire team or squad, and the modern infantry squad had emerged with tactics that were built around the use of the LMG to provide suppressive fire.
The following were either exclusively light machine guns, had a light machine gun variant or were employed in the light machine gun role with certain adaptations.
- Madsen machine gun (various calibers)
- Bergmann MG15 nA Gun (7.92×57mm)
- M1909 Benét–Mercié (8mm Lebel, .303 British, .30-06 Springfield)
- Hotchkiss M1922 (various calibers)
- Bren (.303 British)
- Vickers-Berthier (.303 British)
- Fusil-Mitrailleur Mle 1915 'CSRG', 'Chauchat' light machine gun (8mm Lebel)
- Lahti-Saloranta M/26 (7.62×53mmR)
- Degtyaryov light machine gun (7.62×54mmR)
- Maxim-Tokarev (7.62×54mmR)
- Furrer M25 (7.5×55mm Swiss)
- Lewis machine gun (.303 British, .30-06 Springfield)
- Lewis automatic rifle (8mm Lebel / 6.5×55mm Mauser)
- Huot automatic rifle (.303 British)
- Mendoza RM2 (7×57mm Mauser, .30-06 Springfield)
- Breda 30 (6.5×52mm Carcano)
- ZB vz. 26 (7.92×57mm)
- ZB vz. 30 (7.92×57mm)
|Model||Country of origin||Design date||Caliber(s)||Weight (base model)||Feed system||Rate of fire (rounds/min)||Model variants|
|Madsen machine gun||Denmark||1883||*Various||9.07 kg (20.0 lb)||Box magazine||450|
|M60E3/E4||United States||1950s||*7.62×51mm NATO||8.51 kg (18.8 lb)||Belt fed||550 (cyclic)|
|FN Minimi||Belgium||1974||*5.56×45mm NATO (standard)
|6.85 kg (15.1 lb)||Belt fed or box magazine||1150 (cyclic)||*M249 Squad Automatic Weapon (USA) |
*MK 46 machine gun (USA)
|CETME Ameli||Spain||1974||*5.56×45mm NATO||5.3 kg (11.7 lb)||Belt fed||1200 (cyclic)||*MG82 (Spain)|
|Type-81 LMG||China||2008||*7.62×39mm||5.15 kg (11.4 lb)||100-round drum or 30-round STANAG||750 (cyclic)||*BD-08 LMG (Bangladesh)|
|Ultimax 100||Singapore||1977||*5.56×45mm NATO||4.75 kg (10.5 lb)||Drum or box magazine||600 (cyclic)|
|Vektor Mini-SS||South Africa||1977||*5.56×45mm NATO||8.26 kg (18.2 lb)||Belt fed||900 (cyclic)|
|Negev||Israel||1985||*5.56×45mm NATO (standard)
|7.40 kg (16.3 lb)||Belt fed or magazine||1150 (cyclic)|
|Ares Shrike 5.56||United States||2000s||*5.56×45mm NATO||3.40 kg (7.5 lb)||Belt fed or magazine||800 (cyclic)|
|Stoner 63||United States||1960s||*5.56×45mm NATO||5.30 kg (11.7 lb)||Drum or box magazine||1000 (cyclic)|
|Stoner LMG||United States||2000s||*5.56×45mm NATO||4.54 kg (10.0 lb)||Belt fed||1000 (cyclic)|
|Colt Automatic Rifle||United States||1970s||*5.56×45mm NATO||5.78 kg (12.7 lb)||Drum or box magazine||750 (cyclic)||*Diemaco LSW (CAN)|
|Heckler & Koch MG4||Germany||1990s||*5.56×45mm NATO||8.55 kg (18.8 lb)||Belt fed||885 (cyclic)|
|Steyr AUG H-BAR||Austria||1977||*5.56×45mm NATO||3.90 kg (8.6 lb)||Box magazine||750 (cyclic)|
|L86 LSW||United Kingdom||1970s||*5.56×45mm NATO||6.58 kg (14.5 lb)||Box magazine||775 (cyclic)|
|KRR Minigun||Australia||1985||*5.56×45mm NATO||N/A||Drum magazine||3000 (cyclic)|
|Heckler & Koch MG36||Germany||1990s||*5.56×45mm NATO||3.83 kg (8.4 lb)||Drum or box magazine||750 (cyclic)|
|M27 IAR||Germany||2008||*5.56×45mm NATO||3.6 kg (7.9 lb)||Drum or box magazine||640 (cyclic)|
|INSAS LMG||India||1990s||*5.56×45mm NATO||6.70 kg (14.8 lb)||Box magazine||650 (cyclic)|
|SAR-21 LMG||Singapore||1996||*5.56×45mm NATO||3.82 kg (8.4 lb)||Box magazine||650 (cyclic)|
|Pecheneg machine gun||Russia||1990s||*7.62×54mmR||8.70 kg (19.2 lb)||Belt fed or box magazine||700|
|FM-24/29||France||1924||*7.5×54mm French||9.10 kg (20.1 lb)||Box magazine||500 (cyclic)|
|Breda 30||Italy||1930||*6.5×52mm Mannlicher–Carcano||10.60 kg (23.4 lb)||Stripper clip fed, internal magazine||500 (cyclic)|
|Type 11 light machine gun||Japan||1922||*6.5×50mm Arisaka||10.20 kg (22.5 lb)||Hopper magazine, 30 rounds||450 (cyclic)|
|Type 96 light machine gun||Japan||1936||*6.5×50mm Arisaka||9.00 kg (19.8 lb)||Box magazine||500 (cyclic)|
|Type 99 light machine gun||Japan||1939||*7.7×58mm Arisaka||10.40 kg (22.9 lb)||Box magazine||700|
|M1918 Browning Automatic Rifle||United States||1917||*.30-06 Springfield
|8.80 kg (19.4 lb)||Box magazine||650 (cyclic)|
|ZB vz. 26||Czechoslovakia||1923||*7.92×57mm Mauser||10.50 kg (23.1 lb)||Box magazine||500|
|Lewis Gun|| United States
|13.00 kg (28.7 lb)||Drum magazine||600 (cyclic)|