The Cei-Rigotti is an early assault rifle created by Amerigo Cei-Rigotti, an officer in the Italian Army, in 1890, and extensively modified until its final form circa 1900.
The Cei-Rigotti was tested by the British Small Arms Committee and the Royal Navy. The rifles experienced difficult ejection and had high rates of misfires.
It had select-fire capabilities (semi-automatic or burst) and was a gas operated rifle. Over the next few years (1903 and 1911) there were improvements to its internal functions, such as its gas operation. The rifle fired 6.5x52mm Mannlicher-Carcano ammunition fed from a 25-round detachable box magazine. The rifle, although not actually used by any army (possibly because of its extreme unreliability), was remade in Switzerland, Russia, and Austria. These variations fired 8x56mm (Austria) and 7.62x54mmR (Russian) ammunition.