Halo 5: Guardians altered the LightRifle to be even more similar to the M395B DMR: it now fires single rounds whether hipfired or scoped in, just like the Halo 4 rendition's scoped-in mode.
The weapon's ammunition capacity has been adjusted to match the new single-shot only firing mode from 36/108 to 12/36.
Smart scoped LightRifles fire wider beams, which allows for easier hits on moving or distant targets and reduces the required shots to kill from four to three, assuming the final round is a headshot.
Note that just like the Halo 4 rendition of the weapon, firing the weapon when scoped in results in a lower rate of fire, but much more so when compared to Halo 4, making the final round more difficult to land than expected.
Barbed Lance: an improved LightRifle with 16-round magazines and a faster rate of fire, making the weapon more useful for offensive engagements.
Dying Star: an advanced LightRifle whose rounds are laced with adhesive pulsewave explosives, with three nearby explosions proving fatal to even a shielded Spartan, although its magazine is smaller with only 8 rounds. This weapon is most useful as a defensive weapon.