The M412 kinetic penetrator was a military-grade kinetic penetrator dart developed and used by the Royal Manticoran Marine Corps.
It was a 650 kilogram dart-shapped projectile fitted with a short-lived but powerful impeller drive, a capacitor ring for onboard power, and a guidance package. The Navy's Mark 87 "Damocles" Kinetic Strike Package could be equipped with up to six of these projectiles. (HH14)