M249 light machine gun:

M249 light machine gun:

The M249 light machine gun (LMG), formerly designated the M249 Squad Automatic Weapon (SAW) and formally written as Light Machine Gun, 5.56 mm, M249, is the American adaptation of the Belgian FN Minimi, a light machine gun manufactured by the Belgian company FN Herstal (FN). The M249 is manufactured in the United States by the local subsidiary FN Manufacturing LLC in South Carolina and is widely used in the U.S. Armed Forces. The weapon was introduced in 1984 after being judged the most effective of a number of candidate weapons to address the lack of automatic firepower in small units. The M249 provides infantry squads with the high rate of fire of a machine gun combined with accuracy and portability approaching that of a rifle.

The M249 is gas operated and air-cooled. It has a quick-change barrel, allowing the gunner to rapidly replace an overheated or jammed barrel. A folding bipod is attached near the front of the gun, though an M192 LGM tripod is available. It can be fed from both linked ammunition and STANAG magazines, like those used in the M16 and M4. This allows the SAW gunner to use a rifleman’s magazines as an emergency source of ammunition in the event that he runs out of linked rounds.

M249s have seen action in every major conflict involving the United States since the U.S. invasion of Panama in 1989. Due to the weight and age of the weapon, the United States Marine Corps is fielding the M27 Infantry Automatic Rifle with plans to partially replace the M249 in Marine Corps service.

The M249 is often referred to as a “Squad Assault Weapon”.

Light Machine Gun, 5.56 mm, M249
PEO M249 Para ACOG.jpg

M249 Para fitted with Trijicon ACOG and RFI collapsible stock
Type Light machine gun
Place of origin Belgium (Minimi)
United States (M249)
Service history
In service 1984–present
Used by See Users
Wars Invasion of Panama
Gulf War
Unified Task Force
Bosnian War
Kosovo War
War in Afghanistan[1]
Iraq War
Syrian Civil War
Iraqi Insurgency
Iraqi Civil War (2014-present)[2]
Yemeni Civil War (2015-present)
Saudi-led intervention in Yemen (2015-present)
Conflict in Najran, Jizan and Asir[3]
Production history
Designed 1976
Manufacturer FN Herstal
Unit cost US $4,087[4]
Produced Late 1970s–present
Variants See Variants
Weight 7.5 kg (17 lb) empty
10 kg (22 lb) loaded
Length 40.75 in (1,035 mm)
Barrel length 465 mm (18 in)
521 mm (21 in)

Cartridge 5.56×45mm NATO
Action Gas-operatedopen bolt
Rate of fire Sustained rate of fire: 100 RPM
Rapid rate of fire: 200 RPM
Cyclic rate of fire: 800 RPM
Muzzle velocity 915 m/s (3,000 ft/s)
Effective firing range 700 m (770 yd) (point target, 465 mm barrel)

800 m (870 yd) (point target, 521 barrel)
3,600 m (3,940 yd) (maximum range)

Feed system M27 linked disintegrating beltSTANAG magazine

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