The Sateda military rifle is a triple-barreled weapon found in the Pegasus galaxy, used by the Satedan military as the standard weapon. Those weapons are a similar design to the Genii shotgun. The rifles were designed with three barrels to kill Wraith quicker than any other type of projectile weapons, including Tau'ri firearms.
Ronon Dex primarily used those weapons while he was fighting the Wraith attack on Sateda in 1998, and eight years later when he was made a runner again in 2006. In 2005, Kell's bodyguards carried those weapons. (SGA: "Runner", "Trinity", " Sateda", "MGM Tech Journal")
Note: The prop of this gun is also used in the series "EUReKA".