Extended Range Mortar Cartridge (ERMC) is currently under development for the US Army 120 mm M120/M121 mortar system. Compared to a conventional M934 bomb fired from this system will reach a maximum range of 7,200 metres, the XM984 is expected to almost double the range, to reach 12,000 m’. The range extension being produced by a nose-mounted rocket motor that cuts in at a pre-determined point during the bomb’s trajectory. The rocket will fire 12 seconds after the launch, and burn for a period of four seconds. After a predestinated delay, 54 M80 grenades will be released from the bomb, effecting a target are 233 percent larger than an HE bomb.