Metal Hardness and Finish

[kurusu]

Originally Posted by John Sabato

Don your concept is plausible, but my "tool" for removing the sear spring is my fingernail! it is what I have always used. I simply catch the spring under the curl on the end with my index fingernail and lift and it comes right out. Once the spring is removed, and toggle is locked back over the empty magazine, I would bet that the sear bar would drop out pretty easily.

Even though my "tool" for removing the sear spring is the same as yours. I really don't buy your scenario. I believe the side plate would be missing too in such case.

And the mystery of the missing heads of the grip screws remains to explain.