One launcher firing twelve rockets can completely blanket one square
kilometer with
submunitions. For this reason, the MLRS is sometimes referred to as the "Grid Square Removal System" (
metric maps are usually divided up into 1 km grids).
[6] A typical MLRS cluster salvo consisted of three M270 vehicles each firing all 12 rockets. With each rocket containing 644 M77 grenades, the entire salvo would drop 23,184 grenades in the target area.