So After some time I was finally able to get the conversion done! The only issue i am having currently is with the upper valve. I may have damaged the sealing walls when i was tapping the hole next to it. Using lots of gasket seal and teflon ftw! And since there is bb follower; bolt catch will not function with this mag in.
Here are some pics:
Took the feeding mechanism from M4 high cap. Cut to fit the upper portion of the WE gas mag.
WE M4 gas mag shell. Sanded down lightly inside to accommodate feeding mechanism. Drilled hole for hose to go through.
WE PDW gas mag upper ( was easier to modify). drilled holed slightly bigger, tapped, then sealed the connector.
How the internals sit.
Feeding mech w/ bbs! Once everything was aligned, it all fed extremely well/smoothly. The upper slides out of the case and swivels out of the way so BBs are easy to pour on in. And the bottom plate was replaced with an AEG plate so I didn't have to cut holes for the winding wheel or screw hole.
All together. The hose helps keep the upper in place because of the hole fitting. Can place the rings that lock in place as well for more security.