The M11 grav tank was the primary ground combat vehicle of the Royal Manticoran Army in the 20th Century PD. It was a hybrid design, capable of short "sprints" on countergrav, with conventional treads for stability and long distance travel. Variants included the M11A2, the most common version. Its primary weapon was a 120 mm plasma cannon, supported by a remote tribarrel pulser for anti-infantry defense and an automated point defense turret to ward off incoming projectiles and missiles. An active and passive ECM suite was used to defeat enemy target locks and guided projectiles.