Just realized how the "Binary" Rifle got its name.
Binary is a numbering scheme in which there are only two possible values for each digit: 1 and 0.
If you hit someone with the Binary Rifle, no matter where, it's a 1 shot kill. If you miss, obviously, it's 0.
I figured some people haven't figured this out yet and some may have. I don't know if this is the exact reasoning for its naming, but it seems that it makes the most sense.
I SEE WHAT YOU DID THERE 343i