The pictures are all in the post above. There are no mounting holes that I would use on the Hogster. DO NOT ATTEMPT TO TAKE THE BASE OFF THE HOGSTER. It is epoxied in place and has been aligned by Bering Optics for optimum zero.
I simply made an adapter so I could use the picatinny mount on a Wilcox bridge. The only thing missing on the pictures above is there was no image of other side of the adapter piece. This is simply a 7-slot picatinny rail with a PVS-15 adapter on the end.
I want to reiterate, I do not like or recommend this solution for anyone. It is very forward heavy. Even with a very heavy counter-weight on the back of the helmet. It would be well over 1K without the helmet for the wilcox bridge and lg4 24. If you already have that equipment and just want to try it. It would cost $29 for the shoe, and probably <$10 for the keymod rail. However, on top of all this you would need some type of really heavy counterweight to the setup as well. Here is a picture of the front of the helmet.