M20 SMG

The M20 Submachine Gun is the post-Covenant war successor to the M7 SMG.

The M20 SMG is issued to vehicle crews, security personnel, and Spartans who expect close-quarters combat.

Design details
The M20 SMG is visually very similar to its M7 counterpart, as well as in terms of performance. Like before, the weapon fires pistol-caliber cartridges from a 60-round magazine at a rate of 900 rounds per minute. The M20 is most notably different in its functional design, opting away from the former's caseless cartridges and side-mounted magazine in favor of traditional cased cartridges and a top-mounted magazine.

Changes from M7 SMG in Halo 2: Anniversary

 * Can now be zoomed in using the Smart Scope and have its bloom reduced at the cost of added recoil
 * More damage per round, takes 13-15 shots to kill a fully shielded Spartan
 * Headshots now deal bonus damage on unshielded targets but not enough to instantly kill them
 * Maximum ammo doubled, from 180 to 360

List of appearances

 * Halo 5: Guardians