All right. I originally posted this on AH.com's forums, but it recieved very little reception thanks to a slew of fanart being posted right above this. Hopefully, I'll get more response and feedback here.
So yes, I am a 40k fan, and like many 40k bronies, I wanted to find a way to intergrate the 40k universe with Equestria. However, unlike (what I assume to be) many 40k bronies, instead of intergrating 40k canon into Equestria, and having Primarch Luna-Horus rebel against God-Empress Celestia, I decided to intergrate Ponies into the 40k universe, though as you'll see later on, I also intergrated elements of the Conversion Bureau (and the infamous Chatoyance's interpretation in particular) into it. So thus, without further adue, here is my own headcanon for Ponyhammer 40k.