Russia started development of 5th-gen medium-range air defense missile system 21309161.

"The new missile has a significantly lower weight. This has increased the missile system vehicle’s on-board ammunition capacity 1.5 times. The new system’s missiles are carried in containers and launched from them", Almaz-Antey said then. Head of the Russian Air Defense Forces Alexander Leonov said previously that "a unique new missile" was created for the Buk-M3 version. A new cutting-edge missile has been created for the Buk-M3 medium-range air defense missile system, he said. "The self-propelled system’s transport and firing boxes are designed to hold six missiles. Missiles are more compact but are more precise and capable of flying longer distances. So, it can be called a new unique missile capable of efficiently hitting air targets," he said. He said the capacity of the new missile system had been boosted by 1.5 times as it is capable of holding six missiles instead of four.

Earlier, a Russian defense source told TASS the Buk-M3 missile systems would be included into the Russia army’ inventory before the end of 2016 and would arrive to the army starting from 2016. The Buk-M3 system is superior to the S-300 air defense missile system by a number of characteristics, including the kill probability. The Buk-M3 system has a range of 70 kilometers (43.5 miles), which is 25 kilometers (15.5 miles) more compared to previous versions of the Buk antiaircraft missile system. The Buk-M3 has a maximum firing altitude of 35 kilometers (21.7 miles). Russian Defense Minister Sergei Shoigu said previously there were plans to make operational the first brigade set of the new Buk system in 2016.