There are about a hundred H6s in service (out of about 200 built). These are Chinese copies of the Russian Tu-16s (about 1,500 built). Although the Tu-16 design is over fifty years old, China has continued to rely on their H-6s as one of their principal bombers. The H6 is a 78 ton aircraft with a crew of four and two engines. Most models can carry nine tons of bombs and missiles, with the new H6K able to haul about 12 tons. Most H6s carry the CJ-10A and C201 missiles, as well as bombs. It does not appear that China is building a lot of H6Ks, perhaps no more than twenty. The Russians kept their Tu-16s in service until the early 1990s, but China kept improving their H6 copy. Thus the H-6K is a capable heavy bomber that will apparently be around for another decade or two.