The definition of a hybrid mod is a mod that relies on a disk or pin rather than a 510 connection. If it utilizes a 510 connection, it is not a hybrid mod. (even if the body is flush with the atomizer, both where the surfaces meet & cylindrically) Typically they utilize a disk with a higher surface area than the 510 pin, which provides an experience of less voltage drop in comparison to the 510 connection. In order to test a hybrid mod's genesis (aka genisis) atomizer, one must use a multimeter with probes rather than utilizing an ohm meter designed for the 510 connection.