I snapped these pictures earlier before the thread kinda took off, so this is probably beating a dead horse, but I might as well post them anyways.
You begin with this, a stock nak cm300:
The microphone can be broken up into three parts, the cap, the attenuator barrel, and the battery body housing:
The active modification turns this microphone into this, basically:
By the way, the cp4 shotgun capsule is screwed directly into the battery body, skipping the atenuator housing altogether:
the shotgun:
And finally, only a part of my Nakamichi sluttage (my other mics are in my car, not around right now):