More Scans Taken With The Delta XRF on M1 Carbine Stubs.
https://youtu.be/W7DlVKSWdrU Model 1919 Top Plate, I kept the grease on the plate to see if any copper traces would be significantly increased with the grease, as I was once told that people thought the Cosmolene / Grease was the cause of the Greenish Color of M1 Carbines. It is not, the printed results show that somehow Copper got into the finishing process either on purpose or by accident which seems highly unlikely considering this green tint can be found on multiple weapons. It appears on carbine receiver made by each of the major manufacturers.