The MRM-KE (Mid-Range Munition-Kinetic Energy) is an implementation of the MRM under development by Alliant Techsystems, Lockheed Martin, BAE Systems and HR Textron.
The missile/projectile is designed to be used as a high-velocity penetrator for line-of-sight and beyond-line-of-sight shots. In line of sight, it would operate using laser guidance or a millimeter wave seeker. In BLOS, the shell would be fired in a ballistic arc, and would seek out its own targets.
The missile uses a kinetic energy penetrator to penetrate enemy armor. This effect is improved by a rocket motor that speeds the munition up. It steers with impulse thrusters.
MRM-KE uses technology developed as part of the X-Rod and XM1007 Tank Extended Range Munition (TERM) programs, both of which have been cancelled.
Read more about this topic: XM1111 Mid-Range Munition