Well your ratchet plate can be salvaged if you wish, buffer tabs are easy to come by if the one has to go, the cam area (not "trunion" JBaum would not be happy to see that term used
) is viable but it will take extra work; that front, oh-yeah that is the way I remember the AA kits.
People I knew did the new bushing and carefully patched the bottom of the shroud. I am sure someone w/ the expertise and equipment could salvage it but for the average weekend warrior (like myself) those buffer bushing channels would have to line up perfect, no warp, or shrinkage, unless you have a machine/tool to ream them back true again. It will not be a cake walk, 3-cut Mg42 receivers do not readily appear anymore, this is what we have to work with; so go to it and post pics
Looking good so far
“… corporations have been enthroned, and an era of corruption in high places will follow, … until all wealth is aggregated in a few hands and the Republic is destroyed.”
- Abraham Lincoln (Republican), Nov. 21, 1864