- Why isn't this thing working?
- — A Marine firing the Railgun at a vehicle.
The Railgun, if charged, uses magnets to fire a blast of Gruntiness.
It can't even kill a Mongoose, but is it good at destroying Spartans, if you aim for the face. A common theory is that 343 Industries wanted to see how useless of a weapon they could develop, and then implement it into Halo 4.