Lob bomb

A lob bomb (known officially as an improvised rocket-assisted mortar,^[1] improvised rocket-assisted munition,^[2] or IRAM)^[1] is a rocket-fired improvised explosive device made from a large metal canister (often a propane gas tank that has been drained of its contents and filled with explosives, scrap metal, and ball bearings),^[3] which has been used by insurgents as well as the Iraqi military and police during the Iraq War since late 2007,^[2][4][5] as well as by various forces in other conflicts. The weapon is essentially an airborne version of an improvised explosive device.