Abstract: In an instrument of defense wherein a handle portion (18A, 18B) for a shaft portion (12A, 12B) has a free end and a cavity with a central axis and a mouth (20A, 20B) opening outwardly from the free end for the reception of a spray dispensing unit (26A, 26B) including a spray head mechanism (28A, 28B) with a depending fluid reservoir (26A, 26B), the cavity and reservoir having a mating configuration and extent and of a tolerance such that when aligned and under a press fit sufficient frictional gripping engagement is established therebetween so as to anchor same against separation when transported or in combat; and with the discharge orifice and opposed displaceable spring-biased operating lever (36A, 36B) of the spray bead mechanism (28A, 28B) sufficiently exposed within the cavity mouth (20A, 20B) and at the ready for actuation of same on demand; and further, with the perimeter or edge formation (30A, 30B) of the cavity mouth (20A, 20B) suitably contoured to expose the discharge orifice on the one side and t