Lainer R-29RMU2.1 missile
The adaptive and module structure of the Sineva missile became feasible due to an R&D to complete the missile with the second combat complete set - ten warheads of the low power class. The missile was designated the R-29RMU2.1 index and called Lainer.
The Lainer missiles can be equipped with 10 warheads of the low power class and penetration aids or 8 warheads of the same power class with advanced penetration aids or 4 warheads of the middle class with penetration aids. Moreover, the Lainer missiles can carry a mixed complete set of warheads of different power classes. The operation of any combination of missiles and their combat load aboard the 667BDRM submarines is provided with the Arbat-U2.1 updated shipborne digital computer system.