I got the stock and trunion in. I am pretty sure that I can get this to mount to an AR receiver directly with some milling. I may have to cut the center support and re-thread it. If nothing else, it gave me the opportunity to buy a tap and die set. I have 3 screwed up receivers to play with.
Not going to work. Something is always in the way. I'm sure you could easily use the trunion to make an adapter. I just don't know how to weld.....