The Sturmgewehr 52 was a battle rifle

Battle rifle

A battle rifle is a military service rifle that fires a full power rifle cartridge, such as 7.62x51mm NATO. While the designation of battle rifle is usually given to post-World War II select fire infantry rifles such as the H&K G3, the FN FAL or the M14, this term can also apply to older military...

 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 FG42 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.