Cei-Rigotti

The Cei-Rigotti is a semi-automatic rifle designed in Italy before the turn of the 20th century. The weapon is known to have select-fire capabilities (single-shot and burst) and be gas operated, and was reportedly tested by both the Italian and British army before World War I, but information regarding the weapon and its history is notably sparse and contradictory.

Battlefield 1
The Cei-Rigotti is featured in Battlefield 1. It was first seen during the gameplay trailer released during the EA Play livestream.