M249 SAW

The M249 SAW (Squad Automatic Weapon) is a light machine gun and American variation of the FN Minimi light machine gun. The army found itself seeking a better weapon that was lighter than the M-60, yet with more firepower than the M-16. Since the Browning Automatic Rifle was phased out of production, such a weapon didn't come about until the 1980s. Since then, the SAW has become a weapon used by most troops on the modern battlefield, despite it's flaws.

Rocket Jump
The M249 SAW has been seen used by Rocket Jump in a variety of different videos.
 * The Rocket Jump
 * Minecraft Massacre