The Metal Storm grenade launcher and machine gun system is an electronic rifled barrel with no moving parts. Ignition of charges is electrical impulse.
Depending on the type of ammunition, the barrel can contain from 3 to 6 rounds.
Metal Storm is an Area Denial Weapon System (ADWS) being developed in Australia with significant US government interest. Metal Storm technology is an electronically controlled buildable system that does not have the mechanisms of conventional weapons.
Actually, the only parts that move in Metal Storm are the bullets in the barrels. There may be several of them. This technology allows each barrel to be fired sequentially. The rate of fire from each barrel ranges from single rounds to 6,000 rounds per minute.
The installation can be mounted almost anywhere, and it can be programmed to destroy anything that moves in a given area. Several such installations can be linked and operated from a single command and control center.
Metal Storm - Super Fast Fire Machine Gun
Metal Storm creates an iron curtain of bullets