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.
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.
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.
The Chauchat, named after Colonel Louis Chauchat, the main contributor to its design, was the standard machine rifle or light machine gun of the French Army during World War I (1914–18).
 Its official designation was "Fusil Mitrailleur Modele 1915 CSRG" (in English: ""Machine Rifle Model 1915 CSRG"").
 Beginning in June 1916, it was placed into regular service with French infantry, where the troops called it the FM Chauchat.
 The Chauchat machine rifle in 8mm Lebel was also extensively used in 1917–18 by the American Expeditionary Forces (A.E.F), where it was officially designated as the "Automatic Rifle, Model 1915 (Chauchat)".
 A total of 262,000 Chauchat machine rifles were manufactured between December 1915 and November 1918, including 244,000 chambered for the 8mm Lebel service cartridge, making it the most widely manufactured automatic weapon of World War I.
 The armies of eight other nations – Belgium, Finland, Greece, Italy, Poland, Romania, Russia, and Serbia – also used the Chauchat machine rifle in fairly large numbers during and after World War I.
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.
The SVT-40 (Samozaryadnaya Vintovka Tokareva, Obrazets 1940 goda, "Tokarev self-loading rifle, model of 1940", Russian: Самозарядная винтовка Токарева, образец 1940 года) is a Soviet semi-automatic battle rifle.
 The SVT-40 saw widespread service during and after World War II.
 Intended to be the new service rifle of the Soviet Red Army, production was disrupted by the German invasion in 1941 resulting in a change back to the older Mosin–Nagant bolt-action rifle for the duration of World War II.
 After the war new rifles were adopted by the Soviet Union, such as the SKS and the AK-47.
The Pistole Parabellum 1908—or Parabellum-Pistole (Pistol Parabellum)—is a toggle-locked recoil-operated semi-automatic pistol.
 The design was patented by Georg J. Luger in 1898 and produced by German arms manufacturer "Deutsche Waffen- und Munitionsfabriken" (DWM) starting in 1900 with other manufacturers such as W+F Bern, Krieghoff, Simson, Mauser, and Vickers; it was an evolution of the 1893 Hugo Borchardt–designed C-93.
 The first Parabellum pistol was adopted by the Swiss army in May 1900.
 In German Army service, it was succeeded and partly replaced by the Walther P38 in caliber 9×19mm Parabellum.
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.
Waffenfabrik Bern (English: Weapon Factory Bern ), also known as W+F Bern, was an arms manufacturer in Bern, Switzerland and was a government-owned corporation.
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.

Question: Which selective-fire automatic rifle produced in Nazi Germany during World War II was a battle rifle manufactured by the government-owned W+F Bern of Switzerland heavily patterned after?
Answer: The FG 42