This model is in 1/700 sacle. Each aircraft is armed with eight AGM-114 Hellfire missiles and two LAU-61D/A Hydra 70 rocket launchers. The 12x aircraft are connected as a single sprue by a wire under the aircraft's body. Once the wire is cut the model does not require finishing. The AH-1Z is also available as the AH-1G and AH-1W versions in this shop.
According to Wikipedia: "The Bell AH-1Z Viper is a twin-engine attack helicopter based on the AH-1W SuperCobra, 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 is part of the H-1 upgrade program. It is also called "Zulu Cobra" in reference to its variant letter."