CM 300 carbine

The colloquially-termed "Confetti Maker" for its abilety to shred foes is a Human ground firearm, primarily used by the United Rebel Front.

Introduction
The "Confetti Maker" is a .30-caliber machine gun. However, they are grossly inaccurate and significantly less effective than more advanced weapons. At close range, however, the Confetti Maker is highly effective. It acquired its pseudonym from its excessive ability to fill the air with rounds, thus making the target into shreds of confetti. The Human Rebel forces use this the most like the UNSC use the battle rifle.

It is capable of firing normal or Armor Piercing Rounds, such as MUTA-AP-09334 ammunition rounds.

In book Ghosts of Onyx

Appearances
The "Confetti Maker" is one of the types of guns that grew into standard use by UNSC rebel factions such as the United Rebel Front around 2531. Rebels bore Confetti Makers against SPARTAN-III Blue Team when Blue Team attacked a United Rebel Front encampment, Camp New Hope, planet Victoria, the 111 Tauri System. The users were killed by Kurt after he killed them using Antlion Anti-Personnel Mines and saved the captured Spartan-III's.