The Terror scoped rifle is a very powerful automatic custom built sniper rifle made for Sean which fires special rifle fitted shotgun shells with called Terror rifle ammo.
Rate of Fire-10/10
You can get the terror rifle by completing the Longshot perk .
The Terror scoped rifle is a special sniper rifle that is custom made and fitted for Sean Devlin as there is only one in the game and he uses it, because it is so powerful, accurate and fast it is probaly the best weapon in the game. There is no direct match for what this gun is but is probaly a WW2 prototype customized for Sean because so many seceret ones were made.