The Sturmgewehr 52 (STG-52) was a battle rifle manufactured by the government-owned W+F Bern of Switzerland.
[1] It was chambered in the 7.5mm Kurzpatrone cartridge[2] and later the 7.5mm Swiss service round as the Sturmgewehr 54, which was fed from the left-hand side.
[3] 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.
[4]