. . "Bell AH-1Z Viper"@en . "Bell AH-1 SuperCobra"@en . . "United States Marine Corps"@en . "Role"@en . . "Bell AH-1Z Viper"@en . "Manufacturer"@en . "Unit cost"@en . . "300"^^ . "Primary user"@en . "US$27 million\n\nUS$31 million"@en . "Bell Helicopter"@en . "In service, in production"@en . . . "Attack helicopter"@en . . . "2000-12-08"^^ . "Introduction"@en . "National origin"@en . "Developed from"@en . . . . "Status"@en . "United States"@en . "The Bell AH-1Z Viper \"Zulu Cobra\" is an upgraded version of the AH-1W SuperCobra. The AH-1Z features a four blade, bearingless, composite main rotor system, uprated transmission, and a new target sighting system. It is currently beginning to replace the AH-1W as the primary attack helicopter of the USMC."@en . "September 2010"@en . "First flight"@en . "The Bell AH-1Z Viper \"Zulu Cobra\" is an upgraded version of the AH-1W SuperCobra. The AH-1Z features a four blade, bearingless, composite main rotor system, uprated transmission, and a new target sighting system. It is currently beginning to replace the AH-1W as the primary attack helicopter of the USMC."@en . "An AH-1Z lands on the USS Makin Island."@en . . .