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SIG SG 550, the Glossary

The SG 550 is an assault rifle manufactured by SIG Sauer AG (formerly a division of Schweizerische Industrie Gesellschaft, now known as SIG Holding AG) in Switzerland.^[1]

164 relations: AK-47, Aluminium, Aluminium alloy, Ammunition, Anti-tank grenade, Armed Forces of Malta, Assault rifle, Automatic firearm, Barrel shroud, Battle rifle, Bayonet, Bipod, Brazilian Air Force, Brügger & Thomet, Breechloader, Brigada Specială de Intervenție a Jandarmeriei, Burst mode (weapons), Canadian National Police Service, Carbine, Cartridge (firearms), Circular error probable, Closed bolt, Derbyshire Constabulary, Diopter sight, Dovetail joint, Drug Enforcement Administration, El-Sa'ka Forces, Elevation (ballistics), Exeter, New Hampshire, Extractor (firearms), Federal Bureau of Investigation, Federal Police (Germany), Federal Police of Brazil, Firearms regulation in Switzerland, Flash suppressor, French Army, Fuller (groove), Gas-operated reloading, General Directorate of Security (Turkey), GIGN, Grenade launcher, GROM Military Unit, Grupo Especial de Operaciones, Grupo Especial de Operaciones Federales (Argentina), GSG 9, Gun barrel, Heckler & Koch, Heckler & Koch G3, Heckler & Koch MP5, Indonesian Army, ... Expand index (114 more) »
.300 BLK firearms
5.56 mm assault rifles
7.62×51mm NATO battle rifles
Assault rifles of Switzerland
Long stroke piston firearms
SIG Sauer rifles
Sniper rifles of Switzerland
Weapons and ammunition introduced in 1986

AK-47

The AK-47, officially known as the Avtomat Kalashnikova (also known as the Kalashnikov or just AK), is an assault rifle that is chambered for the 7.62×39mm cartridge. SIG SG 550 and aK-47 are 7.62×39mm assault rifles and long stroke piston firearms.

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Aluminium

Aluminium (Aluminum in North American English) is a chemical element; it has symbol Al and atomic number 13.

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Aluminium alloy

An aluminium alloy (UK/IUPAC) or aluminum alloy (NA; see spelling differences) is an alloy in which aluminium (Al) is the predominant metal.

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Ammunition

Ammunition is the material fired, scattered, dropped, or detonated from any weapon or weapon system.

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Anti-tank grenade

An anti-tank grenade is a specialized hand-thrown grenade used to defeat armored targets.

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Armed Forces of Malta

The Armed Forces of Malta (Forzi Armati ta' Malta) is the name given to the combined armed services of Malta.

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Assault rifle

An assault rifle is a select fire rifle that uses an intermediate-rifle cartridge and a detachable magazine.

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Automatic firearm

An automatic firearm or fully automatic firearm (to avoid confusion with semi-automatic firearms) is a self-loading firearm that continuously chambers and fires rounds when the trigger mechanism is actuated.

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Barrel shroud

A barrel shroud is an external covering that envelops (either partially or full-length) the barrel of a firearm, to prevent unwanted direct contact with the barrel (e.g. accidental collision with surrounding objects, or the user accidentally touching a hot barrel, which can lead to burns).

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Battle rifle

A battle rifle is a service rifle chambered to fire a fully powered cartridge.

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Bayonet

A bayonet (from Old French bayonette, now spelt baïonnette) is a knife, dagger, sword, or spike-shaped melee weapon designed to be mounted on the end of the barrel of a rifle, carbine, musket or similar long firearm, allowing the gun to be used as an improvised spear in close combats.

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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.

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Brazilian Air Force

The Brazilian Air Force (Força Aérea Brasileira, FAB) is the air branch of the Brazilian Armed Forces and one of the three national uniformed services.

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Brügger & Thomet

B&T AG (formerly Brügger & Thomet AG; sometimes rendered B+T) is a Swiss defence supplier specializing in the design and manufacturing of firearms and tactical components such as sound suppressors and rail systems.

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Breechloader

A breechloader is a firearm in which the user loads the ammunition from the breech end of the barrel (i.e., from the rearward, open end of the gun's barrel), as opposed to a muzzleloader, in which the user loads the ammunition from the (muzzle) end of the barrel.

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Brigada Specială de Intervenție a Jandarmeriei

Brigada Specială de Intervenție a Jandarmeriei (Gendarmerie Special Intervention Brigade, BSIJ) is a special operations force belonging to the Romanian Gendarmerie.

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Burst mode (weapons)

In automatic firearms, burst mode or burst-fire is a firing mode enabling the shooter to fire a predetermined number of rounds, usually two or three rounds on hand held weapons to fifty or more rounds on autocannons, with a single pull of the trigger.

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Canadian National Police Service

The Canadian National Police Service (commonly referred to as the CN Police or the CN Rail Police) is a private railway police force protecting the property, personnel, and rail infrastructure of the Canadian National Railway in Canada and the United States.

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Carbine

A carbine is a long gun that has a barrel shortened from its original length. SIG SG 550 and carbine are carbines.

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Cartridge (firearms)

A cartridge, also known as a round, is a type of pre-assembled firearm ammunition packaging a projectile (bullet, shot, or slug), a propellant substance (smokeless powder, black powder substitute, or black powder) and an ignition device (primer) within a metallic, paper, or plastic case that is precisely made to fit within the barrel chamber of a breechloading gun, for convenient transportation and handling during shooting.

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Circular error probable

Circular error probable (CEP),Circular Error Probable (CEP), Air Force Operational Test and Evaluation Center Technical Paper 6, Ver 2, July 1987, p. 1 also circular error probability or circle of equal probability, is a measure of a weapon system's precision in the military science of ballistics.

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Closed bolt

A semi or full-automatic firearm which is said to fire from a closed bolt or closed breech is one where, when ready to fire, a round is in the chamber and the bolt and working parts are forward in battery.

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Derbyshire Constabulary

Derbyshire Constabulary is the territorial police force responsible for policing the county of Derbyshire, England.

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Diopter sight

A diopter sight is an aperture sight component used to assist the aiming of ranged weapons, mainly firearms, airguns, and crossbows.

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Dovetail joint

A dovetail joint or simply dovetail is a joinery technique most commonly used in woodworking joinery (carpentry), including furniture, cabinets, log buildings, and traditional timber framing.

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Drug Enforcement Administration

The Drug Enforcement Administration (DEA) is a United States federal law enforcement agency under the U.S. Department of Justice tasked with combating illicit drug trafficking and distribution within the U.S. It is the lead agency for domestic enforcement of the Controlled Substances Act, sharing concurrent jurisdiction with the Federal Bureau of Investigation, the U.S.

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El-Sa'ka Forces

El-Sa‘ka Forces (translit) is an Egyptian military commando force established in 1955 by Major General Jalal Mahmoud Fahmy Al-Haridi.

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Elevation (ballistics)

In ballistics, the elevation is the angle between the horizontal plane and the axial direction of the barrel of a gun, mortar or heavy artillery.

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Exeter, New Hampshire

Exeter is a town in Rockingham County, New Hampshire, United States.

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A view of the break-action of a typical double-barrelled shotgun, with the action open and the scalloped triangularly shaped extractor visible at the base of the two barrels. The opening lever and the safety catch are visible In breechloading firearms, an extractor is an action component that serves to remove spent casings of previously fired cartridges from the chamber, in order to vacate the chamber for loading a fresh round of ammunition.

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Federal Bureau of Investigation

The Federal Bureau of Investigation (FBI) is the domestic intelligence and security service of the United States and its principal federal law enforcement agency.

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Federal Police (Germany)

The Federal Police (Bundespolizei or BPOL) is the national and principal federal law enforcement agency of the German Federal Government, being subordinate to the Federal Ministry of the Interior, Building and Community (Bundesministerium des Innern, für Bau und Heimat (BMI)).

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Federal Police of Brazil

The Department of Federal Police (DPF) is a federal law enforcement agency of Brazil and one of the three national police forces.

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Firearms regulation in Switzerland

Firearms regulation in Switzerland allows the acquisition of semi-automatic, and – with a may-issue permit – fully automatic firearms, by Swiss citizens and foreigners with or without permanent residence.

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Flash suppressor

A flash suppressor, also known as a flash guard, flash eliminator, flash hider, or flash cone, is a device attached to the muzzle of a rifle that reduces its visible signature while firing by cooling or dispersing the burning gases that exit the muzzle, a phenomenon typical of carbine-length weapons.

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French Army

The French Army, officially known as the Land Army (Armée de terre), is the principal land warfare force of France, and the largest component of the French Armed Forces; it is responsible to the Government of France, alongside the French Navy, French Air and Space Force, and the National Gendarmerie.

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Fuller (groove)

A fuller is a rounded or beveled longitudinal groove or slot along the flat side of a blade (e.g., a sword, knife, or bayonet) that serves to both lighten and stiffen the blade, when considering its reduced weight.

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Gas-operated reloading

Gas-operation is a system of operation used to provide energy to operate locked breech, autoloading firearms.

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General Directorate of Security (Turkey)

The General Directorate of Security (Emniyet Genel Müdürlüğü) or Turkish Police Service (Türk Polis Teşkilatı) is the national civilian police force responsible for law enforcement of the Republic of Turkey, which is affiliated with the Ministry of Interior.

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GIGN

The GIGN is the elite police tactical unit of the National Gendarmerie of France.

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Grenade launcher

A grenade launcher is a weapon that fires a specially designed, large-caliber projectile, often with an explosive, smoke, or gas warhead.

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GROM Military Unit

The GROM Military Unit (Polish: Jednostka Wojskowa GROM), is a Polish special forces unit and forms part of the Special Troops Command of the Polish Armed Forces.

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Grupo Especial de Operaciones

The Grupo Especial de Operaciones (GEO,; Special Group of Operations, GEO), is the police tactical unit of Spain's National Police Corps.

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Grupo Especial de Operaciones Federales (Argentina)

The Grupo Especial de Operaciones Federales (Federal Operations Special Group, GEOF) is a police tactical unit of the Policía Federal Argentina trained to strategically perform counterterrorist and counternarcotics missions.

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GSG 9

GSG 9 der Bundespolizei, formerly Border Guard Group 9, is the police tactical unit of the German Federal Police (Bundespolizei).

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Gun barrel

A gun barrel is a crucial part of gun-type weapons such as small firearms, artillery pieces, and air guns.

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Heckler & Koch

Heckler & Koch GmbH (HK or H&K) is a German firearms manufacturer that produces handguns, rifles, submachine guns, and grenade launchers.

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Heckler & Koch G3

The Heckler & Koch G3 (Gewehr 3) is a select-fire battle rifle chambered in 7.62×51mm NATO developed in the 1950s by the German firearms manufacturer Heckler & Koch, in collaboration with the Spanish state-owned firearms manufacturer CETME. SIG SG 550 and Heckler & Koch G3 are 7.62×51mm NATO battle rifles.

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Heckler & Koch MP5

The Heckler & Koch MP5 (Maschinenpistole 5) is a submachine gun developed in the 1960s by German firearms manufacturer Heckler & Koch. SIG SG 550 and Heckler & Koch MP5 are carbines.

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Indonesian Army

The Indonesian Army (Tentara Nasional Indonesia Angkatan Darat (TNI-AD)) is the land branch of the Indonesian National Armed Forces.

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Indonesian Navy

The Indonesian Navy (Indonesian National Military-Naval Force, TNI-AL) is the naval branch of the Indonesian National Armed Forces.

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Injection moulding

Injection moulding (U.S. spelling: injection molding) is a manufacturing process for producing parts by injecting molten material into a mould, or mold.

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Iron sights

Iron sights are a system of physical alignment markers (usually made of metallic material) used as a sighting device to assist the accurate aiming of ranged weapons (such as a firearms, airguns, crossbows, and bows (mainly found on recurve bows and compound bows), or less commonly as a primitive finder sight for optical telescopes.

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IWA OutdoorClassics

IWA OutdoorClassics, also referred to as simply IWA, short for Internationale Waffen Ausstellung (International Weapons Exhibition), is an annual trade fair held in the Messezentrum Nuremberg in Bavaria, Germany for the hunting, shooting sports, outdoor activity products, private security and law enforcement equipment industries.

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JMF Elite Forces

The JMF Elite Forces is a special forces unit in Malaysia placed under the responsibility of the Royal Johor Military Force (JMF) with the mandate of providing security and protection to the Royal Family of Johor, counter-terrorism and special reconnaissance in any incidents involving the state of Johor.

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Johor Military Forces

The Royal Johor Military Force (Abbr.: JMF;; Jawi) is an independent military force of the state of Johor and the private royal guard of Sultan of Johor in Malaysia.

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Jungle style

Firearm magazines are used "jungle style" if they are fixed together side by side, often with tape.

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KOPASKA

The Kopaska (Frogman Forces Command) is the premier frogman and underwater demolition unit of the Indonesian Navy.

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Kopassus

The Kopassus (Komando Pasukan Khusus, Special Forces Command) is an Indonesian Army (TNI-AD) special forces group that conducts special operations missions for the Indonesian government, such as direct action, unconventional warfare, sabotage, counter-insurgency, counter-terrorism, intelligence gathering and special reconnaissance (SR).

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Korea Coast Guard

The Korea Coast Guard (KCG; 해양경찰청; Hanja: 海洋警察廳, Revised Romanization: Haeyang-gyeongchal-cheong, literally Maritime Police Agency) is a South Korean law enforcement sub-agency responsible for maritime safety and control off the coast.

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Landespolizei

) is a term used to refer to the state police of any of the states of Germany.

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Lead

Lead is a chemical element; it has symbol Pb (from Latin plumbum) and atomic number 82.

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Lethbridge Police Service

The Lethbridge Police Service, formerly known as the Lethbridge Regional Police Service, was established 1902, and serves the city of Lethbridge, a community in southern Alberta of approximately 101,482 in its 2019 municipal census.

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List of assault rifles

Assault rifles are full-length, select fire rifles that are chambered for an intermediate-power rifle cartridge that use a detachable magazine.

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List of carbines

A carbine, from French carabine, is a long arm firearm but with a shorter barrel than a rifle or musket. SIG SG 550 and List of carbines are carbines.

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List of sniper rifles

Major precision rifle variants used by snipers from around the world are as follows.

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M16 rifle

The M16 rifle (officially designated Rifle, Caliber 5.56 mm, M16) is a family of assault rifles adapted from the ArmaLite AR-15 rifle for the United States military.

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M4 carbine

The M4 carbine (officially Carbine, Caliber 5.56 mm, M4) is a 5.56×45mm NATO assault rifle developed in the United States during the 1980s. SIG SG 550 and m4 carbine are carbines.

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M9 bayonet

The M9 bayonet, officially known as the M9 Phrobis III, is an American multi-purpose knife and bayonet officially adopted in 1986 by the United States Armed Forces for the M16 rifle.

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Magazine (firearms)

A magazine, often simply called a mag, is an ammunition storage and feeding device for a repeating firearm, either integral within the gun (internal/fixed magazine) or externally attached (detachable magazine).

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Malaysian Army

The Malaysian Army (Tentera Darat Malaysia; Jawi) is the land component of the Malaysian Armed Forces.

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Malaysian Maritime Enforcement Agency

The Malaysian Maritime Enforcement Agency (Abbr.; MMEA; Agensi Penguatkuasaan Maritim Malaysia – APMM; Jawi); formally known as Malaysia Coast Guard for international identification, is the coast guard organisation of Malaysia, and principal government agency tasked with maintaining law and order, and coordinating search and rescue operations in the Malaysian Maritime Zone and on the high seas.

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Milliradian

A milliradian (SI-symbol mrad, sometimes also abbreviated mil) is an SI derived unit for angular measurement which is defined as a thousandth of a radian (0.001 radian).

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Minute and second of arc

A minute of arc, arcminute (arcmin), arc minute, or minute arc, denoted by the symbol, is a unit of angular measurement equal to of one degree.

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Modular weapon system

A modular weapon system (MWS) is any weapon equipment which has removable core components (or "modules") that can be reconfigured/interchanged to give the weapon different capabilities to adapt to various applications.

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National Firearms Association

The National Firearms Association (NFA; Association Nationale des Armes à Feu) is a Canadian non-profit association based in Edmonton.

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National Gendarmerie

The National Gendarmerie (Gendarmerie nationale) is one of two national law enforcement forces of France, along with the National Police.

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National Police Corps (Spain)

The National Police Corps (Cuerpo Nacional de Policía, CNP;; also known simply as the National Police, Policía Nacional) is the national civilian police force of Spain.

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National Security Guard

The National Security Guard (NSG), commonly known as Black Cats, is a counter-terrorism unit of India under the Ministry of Home Affairs.

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NATO

The North Atlantic Treaty Organization (NATO; Organisation du traité de l'Atlantique nord, OTAN), also called the North Atlantic Alliance, is an intergovernmental military alliance of 32 member states—30 European and 2 North American.

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Nitriding

Nitriding is a heat treating process that diffuses nitrogen into the surface of a metal to create a case-hardened surface.

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Order in Council

An Order-in-Council is a type of legislation in many countries, especially the Commonwealth realms.

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Oxford University Press

Oxford University Press (OUP) is the publishing house of the University of Oxford.

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Pakistan Army

The Pakistan Army, commonly known as the Pak Army (پاک فوج|translit.

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Paratrooper

A paratrooper or military parachutist is a soldier trained to conduct military operations by parachuting directly into an area of operations, usually as part of a large airborne forces unit.

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Phosphate conversion coating

Phosphate conversion coating is a chemical treatment applied to steel parts that creates a thin adhering layer of iron, zinc, or manganese phosphates, to achieve corrosion resistance, lubrication, or as a foundation for subsequent coatings or painting.

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Picatinny rail

The 1913 rail (MIL-STD-1913 rail), also known as the Picatinny rail (1913 Picatinny rail etc.) is an American rail integration system designed by Richard Swan that provides a mounting platform for firearm accessories.

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Pistol grip

On a firearm or other tools, a pistol grip is a distinctly protruded handle underneath the main mechanism, to be held by the user's hand at a more vertical (and thus more ergonomic) angle, similar to how one would hold a conventional pistol.

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Police Corps (Slovakia)

The Police Corps (PZ), commonly known as Slovak Republic Police, is the national police force of Slovakia.

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Police Counter Attack Team

The Police Counter Attack Teams (Polis Karşı Atak Timleri) or simply CAT is one of the special forces unit of the General Directorate of Security.

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Police of Serbia

The Police of Serbia (Policija Srbije), formally the Police of the Republic of Serbia (Policija Republike Srbije), commonly abbreviated to Serbian Police (Srpska policija), is the national civilian police force of the Serbia.

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Police Rapid Response Unit (Finland)

The Police Special Intervention Unit (SIU)https://poliisi.fi/en/-/rapid-response-unit-karhu-is-a-police-special-intervention-unit-for-both-regular-and-emergency-conditions, known as Special Intervention Unit Karhu, is a national police tactical unit in the Helsinki Police Department of the Police of Finland.

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Polish Armed Forces

The Armed Forces of the Republic of Poland (Siły Zbrojne Rzeczypospolitej Polskiej,; abbreviated SZ RP), also called the Polish Armed Forces and popularly called Wojsko Polskie in Poland (roughly the "Polish Military"—abbreviated WP) are the national armed forces of the Republic of Poland.

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Polymer

A polymer is a substance or material consisting of very large molecules linked together into chains of repeating subunits.

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Possession and acquisition licence

The possession and acquisition licence (PAL; permis de possession et d'acquisition) is the primary firearms licence under Canadian firearms laws.

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Rail integration system

sight A rail integration system (RIS; also called a rail accessory system (RAS), rail interface system, rail system, mount, base, gun rail, or simply a rail) is a generic term for any standardized attachment system for mounting firearm accessories via bar-like straight brackets (i.e. "rails") often with regularly spaced slots.

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Receiver (firearms)

In firearms terminology and at law, the firearm frame or receiver is the part of a firearm which integrates other components by providing housing for internal action components such as the hammer, bolt or breechblock, firing pin and extractor, and has threaded interfaces for externally attaching ("receiving") components such as the barrel, stock, trigger mechanism and iron/optical sights.

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Reticle

A reticle, or reticule also known as a graticule, is a pattern of fine lines or markings built into the eyepiece of an optical device such as a telescopic sight, spotting scope, theodolite, optical microscope or the screen of an oscilloscope, to provide measurement references during visual inspections.

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Rifle grenade

A rifle grenade is a grenade that uses a rifle-based launcher to permit a longer effective range than would be possible if the grenade were thrown by hand.

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Rifling

Rifling is the term for helical grooves machined into the internal surface of a firearms's barrel for imparting a spin to a projectile to improve its aerodynamic stability and accuracy.

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RMAF Special Forces

The RMAF Special Forces (Jawi: ڤاسوكن خاص تنترا اودارا), better known as PASKAU, is the special forces of the Royal Malaysian Air Force (RMAF). Its main functions are to carry out high-value target protection, ground forward air controller, combat search and rescue and rescuing downed aircrew assignments.

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Romanian Air Force

The Romanian Air Force (RoAF) (Forțele Aeriene Române) is the air force branch of the Romanian Armed Forces.

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Romanian Naval Forces

The Romanian Naval Forces (Forțele Navale Române) is the principal naval branch of the Romanian Armed Forces and operates in the Black Sea and on the Danube.

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Rotating bolt

Rotating bolt is a method of locking the breech (or rear barrel) of a firearm closed for firing.

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Royal Malaysian Air Force

The Royal Malaysian Air Force (RMAF, Tentera Udara Diraja Malaysia; TUDM; Jawi: تنترا اودارا دراج مليسيا) was formed on 2 June 1958 as the Royal Federation of Malaya Air Force (Tentera Udara Diraja Persekutuan Tanah Melayu; تنترا اودارا دراج ڤرسكوتون تانه ملايو).

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Royal Saudi Navy

The Royal Saudi Navy (Al-Quwwat al-Bahriyah al-Arabiyah as-Su'udiyah) or Royal Saudi Naval Forces (Al-Quwwat al-Bahriyah al-Malakiyah as-Su'udiyah), is the maritime arm of the Saudi Arabian Armed Forces and one of the five service branches of the Ministry of Defense of Saudi Arabia.

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Safety (firearms)

M16A2 rifle In firearms, a safety or safety catch is a mechanism used to help prevent the accidental discharge of a firearm, helping to ensure safer handling.

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Scope mount

Scope mounts are rigid implements used to attach (typically) a telescopic sight or other types of optical sights onto a firearm.

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SEK (Germany)

Spezialeinsatzkommando (SEK, "Special Task Force") are police tactical units of each of the 16 German State Police forces.

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Selective fire

Selective fire, or select fire, is the capability of a weapon to be adjusted to fire in semi-automatic, fully automatic, and/or burst mode.

See SIG SG 550 and Selective fire

Semi-automatic firearm

A semi-automatic firearm, also called a self-loading or autoloading firearm (fully automatic and selective fire firearms are also variations on self-loading firearms), is a repeating firearm whose action mechanism automatically loads a following round of cartridge into the chamber and prepares it for subsequent firing, but requires the shooter to manually actuate the trigger in order to discharge each shot.

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SIG 522LR

The SIG Sauer 522 LR is a.22 LR semi-automatic, blowback operated rifle. SIG SG 550 and SIG 522LR are SIG Sauer rifles.

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SIG GL 5040

The SIG GL 5040/5140 is a 40 mm grenade launcher, which can be mounted under all SIG SG 550/551 assault rifle models and is operated in single-shot mode.

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SIG Group

SIG Group AG is a Swiss multinational corporation and one of the biggest manufacturers in the packaging industry.

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SIG Sauer

Several sister companies that design and manufacture firearms use the brand name SIG Sauer.

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SIG Sauer AG

SIG Sauer AG is a Swiss manufacturer of armaments.

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SIG Sauer SIG516

The SIG Sauer SIG516 is a rifle manufactured by SIG Sauer. SIG SG 550 and SIG Sauer SIG516 are 7.62×39mm assault rifles, 7.62×51mm NATO battle rifles and SIG Sauer rifles.

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SIG SG 510

The Sturmgewehr 57 (Stgw. 57) is a selective fire battle rifle designed by Schweizerische Industrie Gesellschaft (now SAN Swiss Arms) of Switzerland. SIG SG 550 and SIG SG 510 are 7.62×51mm NATO battle rifles and SIG Sauer rifles.

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SIG SG 530

The SIG SG 530 was a Swiss assault rifle developed in the 1960s by Schweizerische Industrie Gesellschaft (SIG) to take the then-new M193 ball and M196 tracer.223 Remington military rounds. SIG SG 550 and SIG SG 530 are assault rifles of Switzerland and SIG Sauer rifles.

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SIG SG 540

The SG 540 is a 5.56×45mm NATO assault rifle developed in the early 1970s by Schweizerische Industrie Gesellschaft (SIG, currently SAN Swiss Arms AG) of Neuhausen, Switzerland as a private venture primarily destined for export markets and as a potential replacement for the 7.5×55mm Swiss SG 510 automatic rifle known as the Stgw 57 in Swiss service. SIG SG 550 and SIG SG 540 are 7.62×51mm NATO battle rifles, assault rifles of Switzerland, long stroke piston firearms and SIG Sauer rifles.

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Sinai insurgency

The Sinai insurgency was an insurgency in the Sinai Peninsula of Egypt, launched by Islamist militants against Egyptian security forces, which have also included attacks on civilians.

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Sling (firearms)

In the context of firearms, a sling is a type of strap or harness designed to allow a shooter to conveniently carry a firearm (usually a long gun such as a rifle, carbine, shotgun, submachine gun or GPMG) on their body, and/or to aid in greater hit probability by allowing the firearm to be better braced and stabilized during aiming.

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Sniper rifle

A sniper rifle is a high-precision, long-range rifle.

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Solingen

Solingen (Solich) is a city in North Rhine-Westphalia, Germany.

See SIG SG 550 and Solingen

Special Anti-Terrorist Unit (Serbia)

The Special Anti-Terrorist Unit (Specijalna antiteroristička jedinica, abbr. САЈ / SAJ), is an elite tactical unit of the Serbian Police.

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Special forces

Special forces or special operations forces (SOF) are military units trained to conduct special operations.

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Special Operations Command (France)

The Commandement des Opérations Spéciales (Special Operations Command) or COS is a joint staff charged with overseeing the various special forces of the French Army, Navy and Air and Space Force, bringing them all under a single operational authority.

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Special Service Group

The Pakistan Army Special Service Group (reporting name:Army SSG) is the special operations forces of the Pakistan Army.

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Special Task and Rescue

The Special Task and Rescue Team (Pasukan Tindakan Khas dan Penyelamat, Jawi: ڤاسوكن تيندقن خاص دان ڤڽلامت ماريتيم), abbreviated as STAR, serves as the command for elite maritime special operations and underwater divers within the Malaysia Coast Guard.

See SIG SG 550 and Special Task and Rescue

Staffordshire Police

Staffordshire Police is the territorial police force responsible for policing Staffordshire and Stoke-on-Trent in the West Midlands of England.

See SIG SG 550 and Staffordshire Police

Stainless steel

Stainless steel, also known as inox, corrosion-resistant steel (CRES), and rustless steel, is an alloy of iron that is resistant to rusting and corrosion.

See SIG SG 550 and Stainless steel

STANAG magazine

A STANAG magazine or NATO magazine is a type of detachable firearm magazine proposed by NATO in October 1980.

See SIG SG 550 and STANAG magazine

Steel

Steel is an alloy of iron and carbon with improved strength and fracture resistance compared to other forms of iron.

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Stock (firearms)

A gunstock or often simply stock, the back portion of which is also known as a shoulder stock, a buttstock, or simply a butt, is a part of a long gun that provides structural support, to which the barrel, action, and firing mechanism are attached.

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SWAT

In the United States, a SWAT (special weapons and tactics) team is a generic term for a police tactical unit.

See SIG SG 550 and SWAT

Swiss Armed Forces

The Swiss Armed Forces (Schweizer Armee; Armée suisse; Esercito svizzero; Armada svizra) operates on land and in the air, serving as the primary armed forces of Switzerland.

See SIG SG 550 and Swiss Armed Forces

Telescopic sight

A telescopic sight, commonly called a scope informally, is an optical sighting device based on a refracting telescope.

See SIG SG 550 and Telescopic sight

Tombac

Tombac, or tombak, is a brass alloy with high copper content and 5–20% zinc content.

See SIG SG 550 and Tombac

Trigger (firearms)

A trigger is a mechanism that actuates the function of a ranged weapon such as a firearm, airgun, crossbow, or speargun.

See SIG SG 550 and Trigger (firearms)

Tritium radioluminescence

Tritium radioluminescence is the use of gaseous tritium, a radioactive isotope of hydrogen, to create visible light.

See SIG SG 550 and Tritium radioluminescence

Unit 777

Unit 777 (الوحدة 777 قتال), also known as Task Force 777, is a tier two special force in the Egyptian Army, falling under the El-Sa'ka Force.

See SIG SG 550 and Unit 777

United States Capitol Police

The United States Capitol Police (USCP) is a federal law enforcement agency in the United States with nationwide jurisdiction charged with protecting the United States Congress within the District of Columbia and throughout the United States and its territories.

See SIG SG 550 and United States Capitol Police

Utusan Malaysia

Utusan Malaysia (Jawi: اوتوسن مليسيا; English: The Malaysian Tribune or simply Utusan) is a Malaysian Malay language daily newspaper headquartered outside Kuala Lumpur.

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Venezuelan Marine Corps

The Venezuelan Bolivarian Marine Corps are known as the Bolivarian Marine Infantry or formally as the Marine Division "General Simon Bolivar" (División de Infantería de Marina General Simón Bolívar) and is part of the Bolivarian Navy of Venezuela.

See SIG SG 550 and Venezuelan Marine Corps

Victorinox

Victorinox is a knife manufacturer and watchmaker based in the town of Ibach, in the Canton of Schwyz, Switzerland.

See SIG SG 550 and Victorinox

Waffenfabrik Bern

Weapons Factory Bern ('''Waffenfabrik Bern'''., also known as W+F Bern), was an arms manufacturer in Bern, Switzerland, which was a government-owned corporation producing firearms for the Swiss Armed Forces.

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War in Afghanistan (2001–2021)

The War in Afghanistan was an armed conflict that took place from 2001 to 2021.

See SIG SG 550 and War in Afghanistan (2001–2021)

Wenger

Wenger was a Swiss cutlery manufacturer that exists today as a brand of once-rival Victorinox, used for knives, watches and licensed products.

See SIG SG 550 and Wenger

West Germany

West Germany is the common English name for the Federal Republic of Germany (FRG) from its formation on 23 May 1949 until the reunification with East Germany on 3 October 1990. The Cold War-era country is sometimes known as the Bonn Republic (Bonner Republik) after its capital city of Bonn. During the Cold War, the western portion of Germany and the associated territory of West Berlin were parts of the Western Bloc.

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West Mercia Police

West Mercia Police, formerly the West Mercia Constabulary, is the territorial police force responsible for policing the counties of Herefordshire, Shropshire (including Telford and Wrekin) and Worcestershire in England.

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West Yorkshire Police

West Yorkshire Police, formerly the West Yorkshire Metropolitan Police, is the territorial police force responsible for policing the metropolitan county of West Yorkshire, England.

See SIG SG 550 and West Yorkshire Police

Windage

Windage is a term used in aerodynamics, firearms ballistics, and automobiles that mainly relates to the effects of air (e.g., wind) on an object of interest.

See SIG SG 550 and Windage

Yemeni civil war (2014–present)

The Yemeni civil war (al-ḥarb al-ʾahlīyah al-yamanīyah) is an ongoing multilateral civil war that began in late 2014 mainly between the Rashad al-Alimi-led Presidential Leadership Council and the Mahdi al-Mashat-led Supreme Political Council, along with their supporters and allies.

See SIG SG 550 and Yemeni civil war (2014–present)

.22 Long Rifle

The.22 Long Rifle, also known as the.22LR or 5.6×15mmR, is a long-established variety of.22 caliber rimfire ammunition originating from the United States.

See SIG SG 550 and .22 Long Rifle

.300 AAC Blackout

The.300 AAC Blackout (designated as the 300 BLK by the SAAMI and 300 AAC Blackout by the C.I.P. or 300 AAC Blackout), also known as 7.62×35 mm, is an intermediate cartridge developed in the United States by Advanced Armament Corporation (AAC) for use in the M4 carbine.

See SIG SG 550 and .300 AAC Blackout

2013 Lahad Datu standoff

The 2013 Lahad Datu standoff, also known as the Lahad Datu incursion or Operation Daulat (Operasi Daulat), was a military conflict in Lahad Datu, Malaysia.

See SIG SG 550 and 2013 Lahad Datu standoff

2020 Nova Scotia attacks

On April 18 and 19, 2020, 51-year-old Gabriel Wortman committed multiple shootings and set fires at 16 locations in the Canadian province of Nova Scotia, killing 22 people and injuring three others before he was shot and killed by the Royal Canadian Mounted Police (RCMP) in Enfield.

See SIG SG 550 and 2020 Nova Scotia attacks

21st Special Service Group

The 21st Special Service Group (Abbr.: 21 SSG), also known as the Grup Gerak Khas and the 21st Special Forces Group, serves as the command for the Malaysian Army's special forces, the Gerak Khas.

See SIG SG 550 and 21st Special Service Group

5.56×45mm NATO

The 5.56×45mm NATO (official NATO nomenclature 5.56 NATO, commonly pronounced "five-five-six") is a rimless bottlenecked centerfire intermediate cartridge family developed in the late 1970s in Belgium by FN Herstal.

See SIG SG 550 and 5.56×45mm NATO

6.45×48mm XPL Swiss

6.45×48mm XPL Swiss (or 6.45×48 GP 80) is an experimental intermediate rifle cartridge.

See SIG SG 550 and 6.45×48mm XPL Swiss

6.5mm Creedmoor

The 6.5mm Creedmoor (6.5×48mm), designated 6.5 Creedmoor by SAAMI, 6,5 Creedmoor by the C.I.P. is a centerfire rifle cartridge introduced by Hornady in 2007.

See SIG SG 550 and 6.5mm Creedmoor

7.5×55mm Swiss

The 7.5×55mm Swiss or 7,5mm GP 11 (or unofficially 7.5×55mm Schmidt–Rubin) is a cartridge developed for the Swiss Army.

See SIG SG 550 and 7.5×55mm Swiss

7.62×39mm

The 7.62×39mm (aka 7.62 Soviet, formerly.30 Russian Short) round is a rimless bottlenecked intermediate cartridge of Soviet origin.

See SIG SG 550 and 7.62×39mm

7.62×51mm NATO

The 7.62×51mm NATO (official NATO nomenclature 7.62 NATO) is a rimless, straight walled, bottlenecked rifle cartridge.

See SIG SG 550 and 7.62×51mm NATO

References

[1] https://en.wikipedia.org/wiki/SIG_SG_550

Also known as 522 Commando, 552 Commando, Commando 552, FASS 90, Krieg 552 Commando, PE90, SG 550, SG 550 sniper, SG 552, SG 552 Commando, SG 553, SG550, SG551, SG552, SIG 550, SIG 551, SIG 552, SIG 552 Commando, SIG 556, SIG 556 Classic, SIG SG 551, SIG SG 552, SIG SG 553, SIG SG-552, SIG SG550, SIG SG551, SIG SG552, SIG SG552 Commando, SIG550, SIG551, SIG552, SIG553, SSG550 Sniper, Stgw 90, Strgw, Sturmgewehr 90, Swiss Arms Classic Green Carbine.

, Indonesian Navy, Injection moulding, Iron sights, IWA OutdoorClassics, JMF Elite Forces, Johor Military Forces, Jungle style, KOPASKA, Kopassus, Korea Coast Guard, Landespolizei, Lead, Lethbridge Police Service, List of assault rifles, List of carbines, List of sniper rifles, M16 rifle, M4 carbine, M9 bayonet, Magazine (firearms), Malaysian Army, Malaysian Maritime Enforcement Agency, Milliradian, Minute and second of arc, Modular weapon system, National Firearms Association, National Gendarmerie, National Police Corps (Spain), National Security Guard, NATO, Nitriding, Order in Council, Oxford University Press, Pakistan Army, Paratrooper, Phosphate conversion coating, Picatinny rail, Pistol grip, Police Corps (Slovakia), Police Counter Attack Team, Police of Serbia, Police Rapid Response Unit (Finland), Polish Armed Forces, Polymer, Possession and acquisition licence, Rail integration system, Receiver (firearms), Reticle, Rifle grenade, Rifling, RMAF Special Forces, Romanian Air Force, Romanian Naval Forces, Rotating bolt, Royal Malaysian Air Force, Royal Saudi Navy, Safety (firearms), Scope mount, SEK (Germany), Selective fire, Semi-automatic firearm, SIG 522LR, SIG GL 5040, SIG Group, SIG Sauer, SIG Sauer AG, SIG Sauer SIG516, SIG SG 510, SIG SG 530, SIG SG 540, Sinai insurgency, Sling (firearms), Sniper rifle, Solingen, Special Anti-Terrorist Unit (Serbia), Special forces, Special Operations Command (France), Special Service Group, Special Task and Rescue, Staffordshire Police, Stainless steel, STANAG magazine, Steel, Stock (firearms), SWAT, Swiss Armed Forces, Telescopic sight, Tombac, Trigger (firearms), Tritium radioluminescence, Unit 777, United States Capitol Police, Utusan Malaysia, Venezuelan Marine Corps, Victorinox, Waffenfabrik Bern, War in Afghanistan (2001–2021), Wenger, West Germany, West Mercia Police, West Yorkshire Police, Windage, Yemeni civil war (2014–present), .22 Long Rifle, .300 AAC Blackout, 2013 Lahad Datu standoff, 2020 Nova Scotia attacks, 21st Special Service Group, 5.56×45mm NATO, 6.45×48mm XPL Swiss, 6.5mm Creedmoor, 7.5×55mm Swiss, 7.62×39mm, 7.62×51mm NATO.

SIG SG 550, the Glossary

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