FN-6 or Feinu-6 (Chinese: 飞弩-6; pinyin: Fēi Nú-6; lit. 'Flying Crossbow-6') is a third-generation passive infrared homing (IR) man portable air defence system (MANPADS). Development from HN-5 missile, FN-6 missile is an export-oriented product and China's most advanced surface-to-air missile offered on the international market. Specially designed to engage low-flying targets, it has a range of 6 km and a maximum altitude of 3.8 km. The missile has been exported to Malaysia, Cambodia, Sudan, Pakistan, and Peru, and a variant was incorporated into People's Liberation Army (PLA) service as the HN-6 (Chinese: 红樱-6). Based on FN-6, China has several numbers of other MANPADS and other vehicle-based short-range air defense systems.