Modernized Cobra for the H-1 upgrade program
The AH-1Z is the Marine Corps' modern attack and reconnaissance helicopter, paired with the UH-1Y through common H-1 architecture.
The AH-1Z Viper is the modern end of the Cobra line, developed through the U.S. Marine Corps H-1 upgrade program. Rather than replacing the Marine attack helicopter with a completely unrelated platform, the program modernized the Cobra concept while increasing commonality with the UH-1Y Venom. Bell positions the AH-1Z as an attack and reconnaissance helicopter engineered for harsh conditions, while NAVAIR treats it as the current Marine attack platform. Its development logic is expeditionary: maintain a ship-capable attack helicopter with improved sensors, weapons, reliability, and supportability.


