16 rounds (24 w/ Extended Mag)
- "Semi-auto gauss rifle that fires electromagnetically propelled bullets. Aiming down sights charges the weapon to fire a more powerful shot at max charge."
- — Description
It is a powerful weapon, killing in 2 shots out to a long distance. The weapon has a decent firecap and time to kill, as well, however, it has sub-assault rifle handling, being between the assault rifles and LMGs. The special quirk to this weapon is that after approximately 2 seconds after aiming down sights, the weapon can actually 1-shot kill enemies, although no "1 shot, 1 kill" medal is awarded for such a task. It is interesting to note every G-Rail variant converts the G-Rail into a burst weapon. The epic V4 Fusilade variant recieves reduced damage for an increased rate of fire.
- "4-round burst, auto-fire, gauss rifle. Aiming down sights charges the weapon to fire more powerful bullets at max charge."
- — Description of the G-Rail - v4 Fusillade