The present invention relates to a hollow bullet for a light weapon which comprises within said hollow: (a) At least one proximity sensor at the front portion of the bullet for sensing an object, and for providing a sensing indication of a proximity object to a control unit;--A control unit for providing a detonation signal to an explosive charge within the bullet upon receipt of said proximity indication;--and An explosive charge for detonating upon receipt of said detonation signal from said control unit.