MC123 Owners: Does the MC123 *fit* e-series ?

This is the MC123:


It's sold by Lighthoud.com
I would like to know if it *fits* e-series lights or aleph parts.
It does not have to work, I just want to know if the threads match ? 20tpi ?

Thanks !

EDIT: I know it does not say on the site it fits E-series stuff...
item description:
NEW from LightHound and TNC is the MC123™ - 1 Cell extender for SureFire C / M / P / Z series flashlights. 6061 Aluminum construction, HA III Natural finish, chemkoted threads and interior for corrosion resistance.
(But I'm still curious... I could use it in a nice setup with e-series parts...)