I know a looong time back there used to be a conversion. But it was a limited run.
What tools do you have on hand, its probably going to some down to a Hacksaw/table saw, sand paper, and JB weld.
I'll let you know if I can find the link. If you end up doing this I just need to know how to convert an AUG to M16 mags then I'm buying one!
sticks