The Ameli (abbreviated from the Spanish ''Ametralladora ligera'' or "light machine gun") is a 5.56mm

light machine gun A light machine gun (LMG) is a light-weight machine gun designed to be operated by a single infantryman, with or without an assistant, as an infantry support weapon. LMGs firing cartridges of the same caliber as the other riflemen of the sa ...

designed for the Spanish Army (''Ejército de Tierra'') by the nationally owned and operated ''Centro de Estudios Técnicos de Materiales Especiales'' (

CETME CETME () is a Spanish government design and development establishment. While being involved in many projects CETME was mostly known for its small arms research and development. The CETME Model 58 and CETME Model L are its most notable project ...

) small arms research institute (founded by the Spanish government in 1950). Development of the weapon began in 1974 under the supervision of Colonel José María Jiménez Alfaro (who would later become the director of CETME).Woźniak, Ryszard: ''Encyklopedia najnowszej broni palnej—tom 1 A-F'', page 140. Bellona, 2001. The Ameli was officially unveiled in 1981 and after undergoing exhaustive military trials was adopted into service in 1982 as the standard squad-level support weapon of the Spanish Army under the designation MG 82.Crawford, Steve: ''Twenty-first Century Small Arms: The World's Great Infantry Weapons'', page 76. Zenith Press, September 2003. The Ameli was manufactured at the Empresa Nacional Santa Bárbara factory (now General Dynamics Santa Bárbara Sistemas) in

A Coruña A Coruña (; es, La Coruña ; historical English: Corunna or The Groyne) is a city and municipality of Galicia, Spain. A Coruña is the most populated city in Galicia and the second most populated municipality in the autonomous community and s ...

until 2013, when the factory was closed.

Design details

Operating mechanism

The Ameli is an automatic weapon that externally resembles the 7.92×57mm Mauser MG 42 machine gun of

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing ...

but has more in common with the MG 45 and its post-war variant, the

West German West Germany is the colloquial term used to indicate the Federal Republic of Germany (FRG; german: Bundesrepublik Deutschland , BRD) between its formation on 23 May 1949 and the German reunification through the accession of East Germany on 3 O ...

7.62×51mm NATO

MG 3 The MG3 is a small car produced by the Chinese automotive company SAIC. The first generation, marketed as the MG3 SW, is based on the British made Rover Streetwise, which itself was based on the Rover 25, while the second generation, introdu ...

. However, unlike the MG 42's roller-locked

short recoil Recoil operation is an operating mechanism used to implement locked breech, autoloading firearms. Recoil operated firearms use the energy of recoil to cycle the action, as opposed to gas operation or blowback operation using the pressure of the pr ...

operating principle (where the barrel and bolt recoil together a short distance before unlocking), the Ameli uses the

delayed blowback Blowback is a system of operation for self-loading firearms that obtains energy from the motion of the cartridge case as it is pushed to the rear by expanding gas created by the ignition of the propellant charge. Several blowback systems exist wi ...

method of operation with a fixed barrel and a pair of rollers which retard the rearward movement of the bolt. This mechanism was employed in CETME's Model A, B, C and Model L series of rifles, and also in the

Heckler & Koch G3 The Heckler & Koch G3 (''Gewehr'' 3) is a 7.62×51mm NATO, select-fire battle rifle developed in the 1950s by the German armament manufacturer Heckler & Koch (H&K) in collaboration with the Spanish state-owned design and development agency CET ...

battle rifle,

HK33 The Heckler & Koch HK33 is a 5.56mm assault rifle developed in the 1960s by West German armament manufacturer Heckler & Koch GmbH (H&K), primarily for export. Building on the success of their G3 design, the company developed a family of smal ...

assault rifle and MP5 series of submachine guns. Similarities with the

7.62mm The 7.62 mm caliber is a nominal caliber used for a number of different cartridges. Historically, this class of cartridge was commonly known as .30 caliber, the imperial unit and customary unit equivalent, and was most commonly used for i ...

Model C and 5.56mm Model L rifles extend to the interchangeability of certain parts. The heart of the operating system is the bolt assembly, which consists of a bolt head, locking piece and two cylindrical rollers, which upon chambering a round, are displaced outwards by angled surfaces in the forward pressing locking piece and into notches in the barrel extension. The geometry of the walls in the barrel extension and the locking piece ensure that once a shot is fired, the bolt head absorbs the recoil impulse from the ignited

cartridge Cartridge may refer to: Objects * Cartridge (firearms), a type of modern ammunition * ROM cartridge, a removable component in an electronic device * Cartridge (respirator), a type of filter used in respirators Other uses * Cartridge (surname), a ...

through the base of the empty casing and transmits this rearward pressure onto the rollers forcing them out of their sockets and inward at a mechanical disadvantage. The rollers then come into contact with inclined surfaces on the locking piece and propel it backwards at a speed that is approximately 1.5x greater than that of the bolt head, thereby increasing the bolt's

inertia Inertia is the idea that an object will continue its current motion until some force causes its speed or direction to change. The term is properly understood as shorthand for "the principle of inertia" as described by Newton in his first law ...

and providing a delay in the blowback sequence. The relatively short initial rear displacement of the bolt head immediately after firing and the calculated delay eliminate the probability of a premature case extraction from the chamber (beyond the thick-walled base of the chamber) that would result in the spent casing bursting as the breech is opened only after the bullet has exited the barrel and gas pressures inside the bore have dropped to within safe limits.

Features

The Ameli fires from an open bolt and uses a striker firing mechanism (in which the bolt and internally channeled firing pin perform the role of a striker). The trigger mechanism permits fully automatic fire only but the rate of fire can be adjusted by using bolts of varying weight, like in the MG 3. The lighter bolts will produce the maximum rate of fire (1,200 rounds/min) while a heavier bolt results in a rate of fire of approximately 850–900 rounds/min. The weapon features a cross-bolt type

safety Safety is the state of being "safe", the condition of being protected from harm or other danger. Safety can also refer to the control of recognized hazards in order to achieve an acceptable level of risk. Meanings There are two slightly dif ...

that disables the

sear The Sahar Elevated Access Road, abbreviated to SEAR, is a dedicated, elevated, express access road in Mumbai that connects the Western Express Highway (WEH) near Hanuman Nagar junction in Vile Parle, with the forecourts of Terminal T2 of the C ...

when pressed into the "safe" position. The machine gun is fed from an open-link disintegrating M27 ammunition belt that can be strung loosely from the feed tray or placed inside a 100 or 200-round disposable plastic container, which is then clipped to the left side of the receiver. This ammunition container has a transparent rear wall that allows the gunner to monitor ammunition levels visually. Belt movement is carried out by a pawl-type feeding mechanism, which was modeled on the MG 42's feed system. Spent cartridge casings are ejected downward through a chute in the receiver. The quick-change type air-cooled barrel is equipped with a slotted

flash suppressor A flash suppressor, also known as a flash guard, flash eliminator, flash hider, or flash cone, is a muzzle device attached to the muzzle (firearms), muzzle of a rifle that reduces its visible signature while firing by cooling or dispersing the b ...

. The barrel has a chrome-lined bore with 6 right-hand grooves and a 178 mm (1:7 in) rifling twist rate that is optimized for use with heavier SS109

5.56×45mm NATO The 5.56×45mm NATO (official NATO nomenclature 5.56 NATO, but often pronounced "five-five-six") is a rimless bottlenecked intermediate cartridge family developed in the late 1970s in Belgium by FN Herstal. It consists of the SS109, L110, an ...

rounds. A barrel with a 305 mm (1:12 in) twist rate designed specifically to stabilize the lightweight M193 cartridge is also available. The chamber portion of the barrel has flutes that assist in the extraction sequence; once gas pressure in the bore drops to a safe level, recycled gases fill the flutes surrounding the cartridge casing, loosening the case from the chamber walls while residual pressure in the barrel forces it back to be ejected downward and forward. A fixed carrying handle is positioned above the barrel near the chamber, and aids in barrel changes when the barrel becomes too hot; the barrel can be removed and replaced in 5 seconds. The Ameli is fitted with a molded

polymer A polymer (; Greek '' poly-'', "many" + ''-mer'', "part") is a substance or material consisting of very large molecules called macromolecules, composed of many repeating subunits. Due to their broad spectrum of properties, both synthetic a ...

stock,

bipod A bipod is a V-shaped portable attachment that helps support and steady a device, usually a weapon such as a long gun or a mortar. The term comes from the Latin prefix ''bi-'' and Greek root ''pod'', meaning "two" and "foot" respectively. Bip ...

and iron sights that consist of a forward post and a rear aperture sight contained in the carry handle assembly with 300, 600, 800 and 1,000 m range settings. The weapon's design makes extensive use of

sheet metal Sheet metal is metal formed into thin, flat pieces, usually by an industrial process. Sheet metal is one of the fundamental forms used in metalworking, and it can be cut and bent into a variety of shapes. Thicknesses can vary significantly; ex ...

stampings; both the receiver, barrel shroud and trigger housing are fabricated from steel pressings and then

welded Welding is a fabrication process that joins materials, usually metals or thermoplastics, by using high heat to melt the parts together and allowing them to cool, causing fusion. Welding is distinct from lower temperature techniques such as braz ...

. The quick-detach bipod has a height adjustment feature and is mounted to the perforated barrel heat shroud at the muzzle end. The light machine gun can be deployed with the bipod, on a vehicle mount or on a static tripod mount.

Users

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PASKAL The Pasukan Khas Laut (''Naval Special Warfare Forces,'' Jawi: ), commonly abbreviated to PASKAL, is the principal special operations force of the Royal Malaysian Navy. PASKAL's task is to conduct small-unit maritime military operations that ...

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References

Bibliography