Originally Posted by PetahW
You've gotten it bass-ackwards, Microgunner - your prejudicial slant is showing.
After much searching I could find nothing to contradict you.
I did learn that the receivers are made by Wright Products of Rice, Wisconsin (now known as Henry Wusconsin) who specializes in ZAMAK castings among other things.
This is not to say that the inner receivers are ZAMAK, just all that I was able to learn.
Maybe I'll order one and see for myself.