Question: The Sturmgewehr 52 was heavily patterned after which selective-fire automatic rifle produced in Nazi Germany during World War II?

full_context: Document 1: FG 42: The FG 42 (German: "Fallschirmjägergewehr" 42, "paratrooper rifle 42") is a selective-fire automatic rifle produced in Nazi Germany during World War II. The weapon was developed specifically for the use of the Fallschirmjäger airborne infantry in 1942 and was used in very limited numbers until the end of the war.
Document 2: Volkssturmgewehr: The Volkssturmgewehr ("People's Assault Rifle") is the name of several rifle designs developed by Nazi Germany during the last months of World War II. They share the common characteristic of being greatly simplified as an attempt to cope with severe lack of resources and industrial capacity in Germany during the final period of the war.
Document 3: MG 51: The 7.5 mm Maschinengewehr 1951 or Mg 51 is a general-purpose machine gun manufactured by W+F of Switzerland. The weapon was introduced into Swiss service when the Swiss Army initiated a competition for a new service machine gun to replace the MG 11 heavy machine gun and the Furrer M25 light machine gun adopted in 1911 and 1925 respectively.
Document 4: Sturmgewehr 52: The Sturmgewehr 52 (STG-52) was a battle rifle manufactured by the government-owned W+F Bern of Switzerland. It was chambered in the 7.5mm Kurzpatrone cartridge and later the 7.5mm Swiss service round as the Sturmgewehr 54, which was fed from the right-hand side. The Sturmgewehr 52 was heavily patterned after the German FG 42 as it was fed from the side from a 30- or 40-round magazine and was also fitted with a muzzle attachment capable of launching rifle grenades.
Document 5: K31: The Karabiner Model 1931 (K31) is a magazine-fed, straight-pull bolt action rifle. It was the standard issue rifle of the Swiss armed forces from 1933 until 1958 though examples remained in service into the 1970s. It has a 6-round removable magazine, and is chambered for the 7.5×55mm Swiss "Gewehrpatrone 1911" or GP 11, a cartridge with ballistic qualities similar to the 7.62×51mm NATO/.308 Winchester cartridge. Each rifle included a 6-round detachable box magazine with matching stamped serial number. A charger is used to load the magazine from the top of the receiver.
Document 6: STG-556: The STG-556 is a Steyr AUG A1 a clone manufactured by Microtech Small Arms Research (MSAR). It was introduced at the 2007 SHOT Show. The STG-556's working system features a bolt release as seen on the M16 rifle; otherwise, the STG-556 retains the features similar to the Steyr AUG, such as having the quick-change barrel option and the ability to change which side the weapon ejects from by changing the bolt out for a right or left side bolt respectively. There is some parts interchangeability but the rifle is not a true clone. The STG-556 ships standard with right side ejector. The STG-556 is unable to use M16-style magazines or STANAG NATO standard magazines; they use versions of a proprietary MSAR magazine resembling the Steyr mags. The current production XM-17 E4 use STANAG magazines. The STG-556 is a short-stoke gas piston. The STG-556 rifle can be converted from either having a telescopic sight or a MIL-STD-1913 rail. It is available in civilian (semi-automatic only) and military/law enforcement (select-fire) variants.
Document 7: Assault rifle: An assault rifle is a selective-fire rifle that uses an intermediate cartridge and a detachable magazine. Assault rifles were first used during World War II. Though Western nations were slow to accept the assault rifle concept, by the end of the 20th century they had become the standard weapon in most of the world's armies, replacing full-powered rifles and sub-machine guns in most roles. Examples include the StG 44, AK-47 and the M16 rifle.
Document 8: 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.
Document 9: StG 44: The StG 44 (abbreviation of Sturmgewehr 44, "assault rifle 44") is a German selective-fire rifle developed during World War II. It is also known under the designations MP 43 and MP 44 ("Maschinenpistole 43", "Maschinenpistole 44" respectively).
Document 10: 7.62×45mm: The 7.62×45mm (designated as the 7,62 × 45 by the C.I.P.) is a rimless bottlenecked intermediate rifle cartridge developed in Czechoslovakia. It is fired by the Czech vz. 52 rifle, Vz. 52 machine gun and ZB-530 light machine gun. The round was later dropped from use when the Czech converted to the standard Warsaw Pact round, the 7.62×39mm (fired by vz. 52/57 rifle and vz. 52/57 light machine gun). Its muzzle velocity and muzzle energy are slightly higher than that of the 7.62×39mm cartridge.
Document 11: Gewehr 43: The Gewehr 43 or Karabiner 43 (abbreviated G43, K43, Gew 43, Kar 43) is a 7.92×57mm Mauser caliber semi-automatic rifle developed by Germany during World War II. The design was based on that of the earlier G41(W), but incorporating an improved short-stroke piston gas system similar to that of the Soviet Tokarev SVT-40, and it incorporated innovative mass-production techniques.
Document 12: FN Model 1949: The Fabrique Nationale Model 1949 (often referred to as the FN-49, SAFN or AFN) is a rifle available as both a semi-automatic rifle and as a selective fire automatic rifle designed by Dieudonné Saive and manufactured by Fabrique Nationale. It was used by the militaries of Argentina, Belgium, the Belgian Congo, Brazil, Colombia, Egypt, Indonesia, Luxembourg, and Venezuela. The automatic rifle version with selective fire produced for Belgium was known as the AFN.
Document 13: Gewehr 41: The Gewehr 41 (German for: rifle 41), commonly known as the G41(W) or G41(M), is a semi-automatic rifle manufactured and used by Nazi Germany during World War II.
Document 14: Karabiner 98k: The Karabiner 98 kurz (] ; "carbine 98 short", often abbreviated Kar98k or K98k) is a bolt-action rifle chambered for the 7.92×57mm Mauser cartridge that was adopted on 21 June 1935 as the standard service rifle by the German "Wehrmacht". It was one of the final developments in the long line of Mauser military rifles. Although supplemented by semi- and fully automatic rifles during World War II, it remained the primary German service rifle until the end of the war in 1945. Millions were captured by the Soviets at the conclusion of World War II and were widely distributed as military aid. The Karabiner 98k therefore continues to appear in conflicts across the world as they are taken out of storage during times of strife.
Document 15: 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>
ground_truth: FG 42