Unlike the old magnetic activated Firenock's products, thenew Firenock "G" series products do not require a magnet for activation of the lighted nock system. Firenock "G" series works just like magic; the LED goes on when it is shot. There are no more clumsy actuator magnets, actuator adaptors, nor sticking and accidentally being turned "on" if the lighted nock system is exposed to a magnetic field. Also, there is no longer the personal frustration and the failure of your lighted nock if you lose your actuator in the field or drop it from a tree stand. Firenock "G" series is really a high-tech piece of equipent with hunter's mind designs.