The Bell AH-1Z Viper is a twin-engine attack helicopter that was developed for the United States Marine Corps. The AH-1Z features a four-blade, bearingless, composite main rotor system, uprated transmission, and a new target sighting system. The AH-1Z incorporates new rotor technology with upgraded military avionics, weapons systems, and electro-optical sensors in an integrated weapons platform. The powerful AH-1Z delivers state of the art dynamics, weapons and avionics to incorporate the latest in survivability. With anti-armor capability, it engages and defeats the broadest array of threats at standoff ranges that defy imagination.