I just recently got mine, heres a few crappy pics:
Heres the side view
a closeup
A look inside
and a picture of it outside the stock with an Alpha mag in it
Its a pretty good system, all mags I have tried fed fine, Alpha mags are a bit tight but fit, all others slide right in. No feeding issues and I like that it protrudes a bit, makes it easier to load a mag without looking.
No prob, I would get Kevin Rayhill a call and ask him any further questions, hes always available to help, the stock that you see the DBM in is also made by him, its unfinished and I'm a bit on the lazy side to finish it haha...