An electrical immobilization weapon having a prolonged range of effectiveness and improved accuracy compared to conventional Taser weapons, while being compact in structure and lightweight. The weapon having a replaceable cartridge which, when employed, can space a pair of electrodes to a specific critical area on a remote target, so the electrical energy carried by the electrodes can induce the involuntary contraction of the involved muscles through the critical area within a significant range of length between the electrodes for effective immobilization. The electrical energy generated by a power source of the weapon completes an electrical circuit through a minimum path being a length of at least 5 inches between the two points on the target.