The GG3 provides a slot with the chip protect so no magnets are applied. Also, there isn't any need to use a multimeter to check for continuity because you hold the probe wire put in place about the GG3 and inexperienced indicator led. The bottom from the Ghost Gunner 3 https://ghost-gunner-380122.fireblogz.com/64154019/ghost-gunner-no-further-a-mystery