 It was adopted by the Royal Italian Army in 1940, when a first batch was bought from Switzerland; initially known as Carabina "S" ("S carbine"), from 1942 it was designated as Fucile anticarro "S" ("S anti-tank rifle"); employed primarily on vehicles given its size and weight, it was largely employed in North Africa; after the 8 September 1943 it was also used by the National Republican Army of the Italian Social Republic.The brakes are changed depending on the recoil force of the rounds being fired.Lighter projectiles require less recoil reduction from the brake to allow the action to cycle.