I think it is very possible to mount eyes from underneath without showing any evidence on the outside of the mag.
Here is my experiment. I am sure i will up at some point and destroy a $100 body but it was donated to the cause by the Devil
And at this point I have proven it can be done, I just need to figure out how to drill the hole from the inside without a Dentist tool.
Ok here it is, moded and setting on a rail to show they are unseen.
And now for the porn!
More to come as I figure things out.