Data crunching receivers!

[billmill]

New guy here and trying to approach this from another angle...
I was wondering if the Hesse receiver fit any certain parts kits better than any others? Say a: G1, African, Brazil...
Like wise for an Century arms,Imble,DCI/Coonan

[W.E.G.]

The most frustrating aspect of out-of-spec receivers is when the ejector block is not mounted in the correct location relative to the bolt. This problem will cause endless misfeeds, and is extremely difficult (if not impossible) to remedy.

The source of correct-spec parts that you put on it has not shown to make any difference.