is a developmental 25 mm belt-fed Grenade Machine Gun with smart shell capability. It is the result of the OCSW or Objective Crew Served Weapon
project. It is lightweight and designed to be two-man portable, as well as vehicle mounted. The XM307 can kill or suppress human beings up to 2,000 meters and destroy light armored vehicles, watercraft, and helicopters at 1,000 meters.