With a range of over 190 km, K-77M is not the longest range air-to-air missile Russia has developed; But in general, K-77M is the most complex air-to-air missile that Russia has ever built. The K-77 has a range longer than the top American missile the AIM-120D which reaches 180km, but short of the Chinese PL-15 which reaches an estimated 250-300km. What makes the K-77’s introduction particularly significant, aside from its more compact size and longer range, is the fact that its active phased array antenna (APAA) guidance technologies make it extremely accurate even against small and agile targets at extreme ranges.