The M7 Light Vehicle Obscuration Smoke System (LVOSS) is a self-defense smoke/obscurant device externally mounted on the host vehicle. The LVOSS is made of lightweight materials. The LVOSS has a push button Arming/Firing Unit (A/FU) which allows the operator to select the direction needing obscured. Additionally, the LVOSS uses smoke grenades that are low in toxicity and which minimize safety hazards to personnel and the environment. The LVOSS counters threat weapon systems operating in the visual and near-infrared portion of the electromagnetic spectrum.