Russian air defence units with S-400 system will receive the 40N6 advanced long-range surface-to-air missile which was recently has been accepted for service in the Russian Army according TASS.

The main improvement in the 40N6 over the earlier generation missiles is maximum distance of attack for aerodynamic targets. The missiles that were previously in service with the S-400 system (9M96, 48N6 and 48N6DM) were capable of striking targets at a distance of up to 250 km. 40N6 can travel up to 380 km for aerodynamic targets and up to 15km for ballistic weapons at an altitude ranging from 10 m to 35 km. The average flight speed is 1,190 m/s.

The 40N6 has an export version, 40N6E which could be offered for sale internationally. More than a thousand of 40N6 missiles are planned to be purchased under the state armament program through 2027 to provide newly formed and rearm existing S400 regiments of the Aerospace Force with them.

Thanks to its new homing head, the missile can destroy aircraft beyond the boundaries of the radio visibility of ground-based radars.