The Type-49 Energy Stream Sniper System was a Covenant sniper rifle used in the early days of the Human-Covenant War. It was heavy, bulky, and overall poor on the battlefield. It was scrapped for the Type-52 Focus Rifle. It is commonly called the 'Stream Rifle'.
The 'Stream Rifle' was first developed by Covenant weapon specialists about forty Earth-years before the Great War. The Stream Rifle became common among Jackal Snipers, and was widely used. During internal disputes, sniper towers would be mounted with fixed Stream Rifle emplacements. Although the weapon was large and poor in manuverability, it made its way into the Human-Covenant War.
During the Great War, Jackal sniper towers would normally be fitted with at least two Stream Rifles. Although its success rate was diminished, it held strong until the Focus Rifle became a more popular choice for snipers.
In a last attempt to keep the rifle in service, weapons specialists created a version that was smaller, lighter, and more useful on the battlefield.