A device that attaches to a handgun that selectively dispenses material from a pressurized canister. The device defines an internal receptacle of a first length that is sized to receive the pressurized canister. A nozzle is disposed at a first end. The pressurized canister is selectively biased against the spray nozzle by being displaced within the canister receptacle by a manual actuator. An actuator is suspended between the tabs with a pivot joint. This enables the actuator to swing from a first position outside the receptacle to a second position within the receptacle. The part of the actuator that enters the receptacle contacts the pressurized canister and displaces the pressurized canister forward against the spray nozzle. This releases the contents of the pressurized canister through the spray nozzle. The actuator includes two parallel levers that pass to both sides of the handgun's trigger guard.