Which riffle on which SIG SG 550 is based is a 5.56×45mm NATO assault rifle developed in the early 1970s by Schweizerische Industrie Gesellschaft?
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SIG SG 550 The SG 550 is an assault rifle manufactured by Swiss Arms AG (formerly a division of Schweizerische Industrie Gesellschaft now known as Sig Holding AG) of Neuhausen, Switzerland. "SG" is an abbreviation for "Sturmgewehr", or "assault rifle". The rifle is based on the earlier 5.56mm SG 540 and is also known as the Fass 90 ("Fusil d'assaut" 90/"Fucile d'assalto" 90) in French/Italian or Stgw 90 in German ("Sturmgewehr" 90).<ref name="SwissArms-SG550/PE90"> </ref>
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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) based out 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.
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MP 40 The MP 40 ("Maschinenpistole 40") was a submachine gun chambered for the 9×19mm Parabellum cartridge. It was developed in Nazi Germany and used extensively by the Axis powers during the Second World War.
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General-purpose machine gun A general-purpose machine gun (GPMG) is an air-cooled, fully automatic, belt-fed weapon with a quick change barrel that can be used in a variety of roles, from bipod- or tripod-mounted infantry support, to deployment as a helicopter door gun, or a vehicle-mounted support weapon. Modern GPMGs fire full-powered rifle cartridges such as the 7.62×51mm NATO, 7.62×54mmR, 7.5×54mm French, 7.5×55mm Swiss, 7.92×57mm Mauser, etc.
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SIG Sauer SIGM400 The SIGM400 is a family of firearms manufactured by SIG Sauer. The rifle is based on the earlier AR-15 rifle.
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.303 British The .303 British (designated as the 303 British by the C.I.P. and SAAMI) or 7.7×56mmR, is a .303 in calibre (with the bore diameter measured between the lands as is common practice in Europe) rimmed rifle cartridge first developed in Britain as a black-powder round put into service in December 1888 for the Lee–Metford rifle. In 1891 the cartridge was adapted to use smokeless powder. It was the standard British and Commonwealth military cartridge from 1889 until the 1950s when it was replaced by the 7.62×51mm NATO.
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Assault gun An assault gun is a form of self-propelled artillery which utilizes an infantry support gun mounted on a motorized chassis, normally an armored fighting vehicle. Assault guns are designed to provide direct fire support for infantry attacks, especially against other infantry or fortified positions. The term is a literal translation of the German word "Sturmgeschütz", which was applied to the first purpose-built assault gun, the StuG III, in 1940.
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FN FAL The FN FAL (French: "Fusil Automatique Léger" , English: Light Automatic Rifle), is a battle rifle designed by Dieudonné Saive and Ernest Vervier and manufactured by Fabrique Nationale d'Herstal (FN Herstal). During the Cold War it was adopted by many North Atlantic Treaty Organization (NATO) countries, with the notable exception of the United States. It is one of the most widely used rifles in history, having been used by more than 90 countries.
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7.92×33mm Kurz The 7.92×33mm "Kurz (designated as the 7.92 x 33 kurz by the C.I.P.) is a rimless bottlenecked intermediate rifle cartridge developed in Nazi Germany prior to and during World War II. The ammunition is also referred to as 7.9mm "Kurz ("German: "Kurz" " meaning "short"), 7.9 "Kurz", or 7.9mmK, or 8×33 Polte. It was specifically intended for development of an automatic carbine (assault rifle). The round was developed as a compromise between the longer 7.92×57mm rifle and the 9×19mm Parabellum pistol rounds, and is known as an intermediate cartridge (German: "Mittelpatrone" ).
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.50 BMG The .50 Browning Machine Gun (.50 BMG, 12.7×99mm NATO and designated as the 50 Browning by the C.I.P.) is a cartridge developed for the Browning .50 caliber machine gun in the late 1910s. Entering service officially in 1921, the round is based on a greatly scaled-up .30-06 cartridge. Under STANAG 4383, it is a standard cartridge for NATO forces as well as many non-NATO countries. The cartridge itself has been made in many variants: multiple generations of regular ball, tracer, armor-piercing (AP), incendiary, and saboted sub-caliber rounds. The rounds intended for machine guns are linked using metallic links.
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Heckler &amp; Koch P9 The HK P9 is a semi-automatic pistol from Heckler & Koch in 9×19mm Parabellum and the first to use a variation of H&K's roller delayed blowback system in a pistol format and polygonal rifling now common in H&K designs. Design began around 1965 and production ran between 1969 and 1978. Only 485 single-action P9's were produced and were discontinued in 1970. A traditional double action version, the P9S (the "S" standing for "Spannabzug", or "double-action trigger") was manufactured in greater numbers.
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Heckler &amp; Koch HK417 The Heckler & Koch HK417 is a battle rifle designed and manufactured by Heckler & Koch in Germany. It is a gas-operated, selective fire rifle with a rotating bolt. It is chambered for the full-power 7.62×51mm NATO round, instead of the less powerful 5.56×45mm NATO intermediate cartridge. The HK417 is intended for use in roles where the greater penetrative power and range of the 7.62×51mm NATO round are required. It has been adopted for service by a number of armed forces, special forces, and police organizations.
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Advanced Individual Combat Weapon The Advanced Infantry Combat Weapon (AICW) was a prototype assault rifle developed in Australia. The AICW combined a standard 5.56 mm assault rifle based on the successful Steyr AUG with a superposed load grenade launcher developed by Metal Storm.
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Solothurn ST-5 The Solothurn ST-5 is a 20 mm anti-aircraft gun designed by Solothurn in Switzerland which ultimately was the design basis for the highly successful 2 cm FlaK 30 series of guns used by Germany in World War II.
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MAS-49 rifle The MAS-49 is a French semi-automatic rifle that replaced various bolt action rifles as the French service rifle that was produced from 1949. It was designed and manufactured by the government-owned MAS arms factory. The French Army formal designation of the MAS-49 is Fusil Semi-automatique de 7,5mm Modele 1949 ("semi-automatic rifle of 7.5mm model 1949"). The MAS-49 semi-automatic rifle was produced in limited quantities (20,600 units), whereas the shorter and lighter variant, the MAS-49/56, was mass manufactured (275,240 units) and issued to all branches of the French military. Overall, the MAS-49 and 49/56 rifles gained the reputation of being accurate, reliable and easy to maintain in adverse environments. All the MAS-49 and 49/56 rifles feature a rail on the left side of their receivers to accommodate a designated rifle scope. The MAS-49 and MAS-49/56 were replaced as French service rifles by the FAMAS assault rifle in 1979.
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10 cm schwere Kanone 18 The 10.5 cm schwere Kanone 18 (10.5 cm sK 18) was a field gun used by Germany in World War II. The German army wanted a new 10.5 cm gun as well as 15 cm howitzer which were to share the same carriage. Guns are heavier than howitzers due to the longer barrel. This also led to the 15 cm sFH 18. As such both weapons had a similar weight and could be carried by a similar carriage. By 1926 Krupp and Rheinmetall had specimen designs, and prototypes were ready by 1930, but was not fielded until 1933–34. Both Krupp and Rheinmetall competed for the development contract, but the Wehrmacht compromised and selected Krupp's carriage to be mated with Rheinmetall's gun.
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Swiss Arms SAN Swiss Arms AG is a Swiss manufacturer of armaments. It was known as SIG Arms AG before 2000 when it was acquired by the German investors Michael Lüke and Thomas Ortmeier from parent company "Schweizerische Industrie Gesellschaft" (SIG). The Castelli Moser family from Lugano owns the 20% of the factory.
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FA-MAS Type 62 The FA-MAS Type 62 is a 7.62×51mm NATO rifle developed by the French Army as a replacement for the MAS-49/56. It was the last in series of 40 different prototype rifles designed between 1952 and 1962, and bears a resemblance to the FN FAL. However, the introduction of the 5.56×45mm cartridge caused the French to rethink their approach and the project was eventually cancelled. The Type 62's bayonet was later adopted for use on the FAMAS rifle.
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HIW VSK The HIW VSK was a carbine of German origin developed by Hessische Industrie Werke. It was intended as a Volkssturm weapon and used blow forward operation.
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Heckler &amp; Koch UMP The UMP ("Universale Maschinenpistole", German for "Universal Submachine Gun") is a submachine gun developed and manufactured by Heckler & Koch. The UMP has been adopted by various agencies such as the U.S. Customs and Border Protection. Heckler & Koch developed the UMP as a lighter and cheaper successor to the MP5, though both remain in production.
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Mannlicher M1895 The Mannlicher M1895 (German: "Infanterie Repetier-Gewehr M.95" , Hungarian: "Gyalogsági Ismétlő Puska M95" ; "Infantry Repeating-Rifle M95") is a bolt-action rifle, designed by Ferdinand Ritter von Mannlicher that used a refined version of his revolutionary straight-pull action bolt, much like the Mannlicher M1890 carbine. It was nicknamed the "Ruck-Zu(rü)ck" (German slang for "back and forth") by Austrian troops and "Ta-Pum" by Italian troops who even wrote a song about it during World War I.
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SIG MG 710-3 The SIG MG 710-3 is a Swiss 7.62 mm general-purpose machine gun (GPMG) designed and manufactured by SIG - Schweizerische Industrie Gesellschaft (currently Swiss Arms AG). The weapon was developed as a commercial venture primarily for export, since the Swiss Army had already adopted the 7.5 mm MG 51 GPMG (chambered for the 7.5×55mm Swiss Schmidt–Rubin rifle cartridge), produced by the federal arms factory W+F.