m249saw machine gun

M249saw Machine Gun - And originally written as Light Machine Gun, 5.56mm, M249, is an American variant 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 a subsidiary of FN Manufacturing LLC, a company in Columbia, South Carolina, and is widely used by the US Armed Forces. The weapon was introduced in 1984 after it was found to be the best (compared to other candidate weapons) to solve the lack of firepower in small areas. The M249 provides infantry units with the rate of fire of a machine gun, combined with the accuracy and portability of a machine gun.

M249saw Machine Gun

The M249 is gas and air-cooled, has a quick-change barrel (allowing the gun to quickly change to a heated or fixed barrel) and a collapsible bipod attached to the front of the weapon ( also available M192 LGM rack) . ). The saw can be fed from guns and STANAG magazines (such as those used in the M16 and M4), allowing the experienced user to use them as a source of weapons if they all wear belts. However, STANAG trees should only be used in emergencies due to their high safety rating.

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Since the US invasion of Panama in 1989, M249s have been used in major conflicts involving the US. In 2009, the US Marine Corps selected the M27 Infantry Automatic Rifle to replace the M249 in USMC service.

In 1965, the main machine guns of the US Army and US Marine Corps were the M2 Browning and the M60. The M2 is a heavy machine gun mounted on vehicles or fixed positions.

The M60 is a standard machine gun designed for troops to provide heavy automatic fire.

Both guns are very heavy and usually require a team of less than two to operate properly.

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The Browning Automatic Rifle (BAR), the Army's first manned machine gun since its introduction in World War I, was discontinued in 1957 with the introduction of the M14 rifle (which was fully automatic). .

Each "rifle designated" unit is ordered to use their weapons in a completely different setting, while other units are required to use their rifle's semi-automatic mode in the Many cases increase accuracy and save guns.

Because the M14 and M16 rifles were not designed with automatic fire in mind, they often overheated or jammed.

The 20- and 30-round magazines of these weapons are limited in their long-term effectiveness compared to fed weapons.

M249 Saw Light Machine Gun

The Army decided that a single machine gun would be better, lighter than the M60 but with more firepower than the M16; Armies no longer had to rely on rifles for automatic fire.

In the 1960s, the installation of a machine gun in an infantry unit was studied in various studies.

Although there was a brief discussion with the idea of ​​a universal or dart-firing machine gun in one study, most of the light machine tests were conducted with the Stoner 63 light machine gun, an interchangeable modular weapon. easy for different types. the reasons.

The Stoner 63 LMG saw brief combat in Vietnam with the Marine Corps and later on a larger scale with the US Navy SEALs.

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In 1968, the Army Small Arms Program planned for a new 5.56mm LMG, although funding was not allocated (many in the Army thought the 5.56mm would be the reduced version). Research began on improved 5.56mm bullets with better performance parameters.

In July 1970, the US Army approved the development of an LMG without a specific caliber. At this time, the nomenclature "Squad Automatic Weapon" (SAW) was introduced.

The actual design of other cartridges for the LMG did not begin until July 1971. A month later, Frankford Arsal decided on two cartridge designs for the new LMG: a 6mm cartridge and a new 5.56mm cartridge with a larger body.

No plans were finalized until March 1972, when the Army issued a detailed document for the planned mission.

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Prior to July 1972, SAW development contracts were awarded to Maremont, Philco Ford, and the Rodman Laboratory at Arsal, Rock Island. These companies produced designs with the military designations XM233, XM234, and XM235, respectively—the X being designated "experimental." The plans must weigh less than 9.07 kg (20 lb), with 200 rounds of ammunition, and a range of 800 meters (2,600 ft).

The first Minimi prototype, built in Belgium, was given to the US Infantry Board for evaluation before receiving the designation XM249.

When it came time to develop and test SAW cartridges, three 5.56mm cartridges were introduced along with 6mm cartridges: the M16 HBAR, a heavy-duty variant of the M16 designed for continuous fire; Fabrique Nationale de Herstal (FN) Mini; and HK 23A1. The first test was held in December 1974.

In February 1976, Minimi and Rodman XM235 SAW were selected for further development. At this time, the ideas about the 6mm cartridge started due to the logistical implications of providing some kind of weapon for the infantry.

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In June, revisions to the SAW specification were proposed to make the standard 5.56mm ammunition compatible. In October, the requested amendments were approved and requests were made to convert the Rodman XM235 to 5.56mm. Production of the redesigned XM235 was assigned to Ford Aerospace and its designation was changed to the XM248.

A new version of the M16 HBAR, the XM106, was developed in 1978, and shortly thereafter Heckler & Koch filed to include a 5.56mm variant of its HK 21A1 (instead of the 7.62mm NATO ammo usually done) in the future. SAW tests. . The final model was designated XM262. Now the Mini has the name XM249.

In May 1980, the FN XM249 was chosen as the best choice for further development based on performance and cost, with the HK XM262 proving to be a close second.

The new gun entered US Army service as the M249 unit in 1984 and was adopted by the US Marine Corps a year later. The bottom of the US-made model is different than the standard Minimi.

M249 Machine Gun Case

Although the M249 was considered reliable and accurate, it was thought to present unacceptable hazards in the form of an exposed hot barrel and sharp edges. There are complaints that require prior knowledge of specialized repair equipment. On August 23, 1985, th-U.S. Undersecretary of the Army James R. Ambrose halted production of the M249 to develop a product improvement program (PIP) designed to address these issues.

Congress removed funds for the M249 from the 1986 budget, allocating the first year's funds from the M249 program for other purposes, including retirement and salary increases. More than 1,100 M249s originally issued will remain in service but will be fitted with the PIP kit when available. More than 7,000 M249s remain in storage awaiting maintenance changes. The PIP cartridge was fully developed and implemented and production of the M249 resumed.

It fires a 5.56×45mm NATO cartridge, which is a combination of one M856 tracer and four M855 ball cartridges fed from M27 cartridges. Belts are usually stored in a hard plastic or soft tissue box attached to the bottom of the gun.

It operates from an industrial mill and uses gas. When the trigger is pressed, the cartridge and cartridge will move forward under the force of the spring. The cartridge is released from the belt, chambered and released, sending the bullet down the hole. Expanding propellant gases are introduced into the chamber through a second cylinder. This pressure moves the piston, providing energy to retract and release the spt shell, as well as moving the belt and compressing the recoil spring, setting it up for subsequent shots. At 1,041 mm (41 in) long and 7.5 kg (17 lb) in weight (10 kg (22 lb) with a 200-round belt and plastic ammo box), the M249 is a heavy duty weapon. .

M249 Saw Light Machine Gun Stock Vector. Illustration Of Ar15

The M249 airsoft gun is equipped with a mechanism that removes and replaces the barrel assembly with a different one, allowing the user to easily replace the barrel in the field when it is too hot to fire. The speed of rotation of the gun barrel is one revolution per 180 mm (7 in).

An attachable bipod with adjustable feet is attached near the front of the weapon, while it is equipped to be securely attached to the M192's light base or vehicle mount.

The M249 gas regulator has two different gas port sizes: normal and negative. The negative setting increases the cyclic rate of fire from 700-850 rounds per minute to 950-1,150 rounds per minute and is only used in extreme environmental conditions or when the environment is heavily contaminated. gas pipe of a gun. The second-stage gas regulator was discarded as part of the product improvement program, resulting in M249s that received the product improvement kit no longer firing high-speed rounds.

Rapid fire, rapid fire

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