Abstract: A combination lethal/nonlethal firearm device is disclosed wherein a lethal gun, pistol or rifle that conventionally fires solid projectiles in the form of bullets, is conveniently converted to a non lethal defensive weapon by means of a novel attachment of a non lethal canister of dibilating chemical fluid such as tear gas or pepper gas to the barrel of the firearm. The canister is removably attached to the barrel by means of a saddle bracket attached to a trigger guard mounnting clamp, and where the direction of fire of the fluid propellant therein is along the firearm barrel and in the same line of fire as the trajectory of a solid projectile bullet of the firearm. Activation of the chemical dispenser is achieved by means of an activation plunger button adjacent the trigger guard in such manner that a peace officer may choose the better of lethal or non lethal defensive procedures.